WSL2 mirrored mode missing ipv6 route when wireguard connects (in host)

[KalleDK]

Windows Version

Microsoft Windows [Version 10.0.22631.5909]

WSL Version

2.6.1.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

6.6.87.2-1

Distro Version

Debian 13

Other Software

Wireguard in windows

Repro Steps

WSL configured in mirrored mode
Host has only ipv4 - the same in WSL
Connect wireguard in the host to a server that provides ipv4 and ipv6
Host now has ipv4 and ipv6 address and it works
WSL now has ipv4 and ipv6 address - but is missing the ipv6 route
Quicj fix is to run sudo ip -6 route add default dev eth1 after connection is made and ipv6 starts working correctly

Expected Behavior

Ipv6 packets to be routed via the vpn tunnel

Actual Behavior

Ipv6 packets going nowhere due to routing missing

Diagnostic Logs

Edit: added routes as requested

I did two tests, one on location (which has been anonomized to ffff:1111, and one via mobile hotspot bbbb:cccc. In both cases I connect to the VPN server at ffff:1111

Also small note (don't know if it matters), systemd is enabled in WSL.

On Location ffff:1111

Pre Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
16      172.20.10.255/32                               0.0.0.0                                          256 35       ActiveStore
16      172.20.10.11/32                                0.0.0.0                                          256 35       ActiveStore
16      172.20.10.0/24                                 0.0.0.0                                          256 35       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      0.0.0.0/0                                      172.20.10.1                                        0 35       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
38      fe80::a871:46c5:49ef:7b15/128                  ::                                               256 15       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
16      2a05:ffff:1111:10:89d3:8d2c:9dc3:902c/128      ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10:8205:9c17:9386:708/128       ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10::/64                         ::                                               256 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
16      ::/0                                           fe80::1a5a:58ff:fe39:365                         256 35       ActiveStore

Post Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
16      172.20.10.255/32                               0.0.0.0                                          256 35       ActiveStore
16      172.20.10.11/32                                0.0.0.0                                          256 35       ActiveStore
16      172.20.10.0/24                                 0.0.0.0                                          256 35       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
16      0.0.0.0/0                                      172.20.10.1                                        0 35       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
38      fe80::a871:46c5:49ef:7b15/128                  ::                                               256 15       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
16      2a05:ffff:1111:10:89d3:8d2c:9dc3:902c/128      ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10:8205:9c17:9386:708/128       ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10::/64                         ::                                               256 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
70      ::/0                                           ::                                                 0          ActiveStore
16      ::/0                                           fe80::1a5a:58ff:fe39:365                         256 35       ActiveStore

Pre WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default dev eth2 proto kernel scope link
default via 172.20.10.1 dev eth0 proto kernel metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.20.10.0/24 dev eth0 proto kernel scope link metric 291
172.20.10.1 dev eth0 proto kernel scope link metric 35
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.20.10.11 dev eth0 table local proto kernel scope host src 172.20.10.11
broadcast 172.20.10.255 dev eth0 table local proto kernel scope link src 172.20.10.11
local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
2a05:ffff:1111:10::/64 dev eth0 proto kernel metric 291 pref medium
fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:8205:9c17:9386:708 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:89d3:8d2c:9dc3:902c dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

Post WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default via 172.20.10.1 dev eth0 proto kernel metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.20.10.0/24 dev eth0 proto kernel scope link metric 291
172.20.10.1 dev eth0 proto kernel scope link metric 35
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.20.10.11 dev eth0 table local proto kernel scope host src 172.20.10.11
broadcast 172.20.10.255 dev eth0 table local proto kernel scope link src 172.20.10.11
2a05:ffff:1111:10::/64 dev eth0 proto kernel metric 291 pref medium
fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:8205:9c17:9386:708 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:89d3:8d2c:9dc3:902c dev eth0 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium

Via Phone Hotspot bbbb:cccc

Pre Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      10.35.171.255/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.172/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.0/24                                 0.0.0.0                                          256 35       ActiveStore
16      0.0.0.0/0                                      10.35.171.90                                       0 35       ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
38      fe80::9591:6868:90cf:a149/128                  ::                                               256 15       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
16      2a02:bbbb:cccc:11f4:7605:860b:b2ff:827/128     ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936/128    ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4::/64                       ::                                                16 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
16      ::/0                                           fe80::34cc:e7ff:fe04:efc3                         16 35       ActiveStore

Post Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      10.35.171.255/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.172/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.0/24                                 0.0.0.0                                          256 35       ActiveStore
70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
16      0.0.0.0/0                                      10.35.171.90                                       0 35       ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
38      fe80::9591:6868:90cf:a149/128                  ::                                               256 15       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
16      2a02:bbbb:cccc:11f4:7605:860b:b2ff:827/128     ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936/128    ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4::/64                       ::                                                16 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
70      ::/0                                           ::                                                 0          ActiveStore
16      ::/0                                           fe80::34cc:e7ff:fe04:efc3                         16 35       ActiveStore

Diff Host

+70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
+70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
+70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
+70      ::/0                                           ::                                                 0          ActiveStore

Pre WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default via 10.35.171.90 dev eth0 proto kernel metric 35
10.35.171.0/24 dev eth0 proto kernel scope link metric 291
10.35.171.90 dev eth0 proto kernel scope link metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
local 10.35.171.172 dev eth0 table local proto kernel scope host src 10.35.171.172
broadcast 10.35.171.255 dev eth0 table local proto kernel scope link src 10.35.171.172
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
2a02:bbbb:cccc:11f4::/64 dev eth0 proto kernel metric 51 pref medium
fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936 dev eth0 table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:7605:860b:b2ff:827 dev eth0 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium

Post WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default dev eth2 proto kernel scope link
default via 10.35.171.90 dev eth0 proto kernel metric 35
10.35.171.0/24 dev eth0 proto kernel scope link metric 291
10.35.171.90 dev eth0 proto kernel scope link metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
local 10.35.171.172 dev eth0 table local proto kernel scope host src 10.35.171.172
broadcast 10.35.171.255 dev eth0 table local proto kernel scope link src 10.35.171.172
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
2a02:bbbb:cccc:11f4::/64 dev eth0 proto kernel metric 51 pref medium
fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936 dev eth0 table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:7605:860b:b2ff:827 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

Diff WSL

+default dev eth2 proto kernel scope link
+local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
+broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
+local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
+multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

[github-actions]

Logs are required for review from WSL team

If this a feature request, please reply with '/feature'. If this is a question, reply with '/question'.
Otherwise, please attach logs by following the instructions below, your issue will not be reviewed unless they are added. These logs will help us understand what is going on in your machine.

How to collect WSL logs

Download and execute collect-wsl-logs.ps1 in an administrative powershell prompt:

Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/WSL/master/diagnostics/collect-wsl-logs.ps1" -OutFile collect-wsl-logs.ps1
Set-ExecutionPolicy Bypass -Scope Process -Force
.\collect-wsl-logs.ps1

The script will output the path of the log file once done.

If this is a networking issue, please use collect-networking-logs.ps1, following the instructions in Collect WSL logs for networking issues

Once completed please upload the output files to this GitHub issue.

See Collect WSL logs (recommended method).

If you choose to email these logs instead of attaching them to the bug, please send them to wsl-gh-logs@microsoft.com with the GitHub issue number in the subject, and include a link to your GitHub issue comment in the message body, and reply with '/emailed-logs'.

[KalleDK]

/emailed-logs

[github-actions]

Diagnostic information

Found '/emailed-logs', adding tag 'emailed-logs'

[keith-horton]

Kalle Møller (@KalleDK)
Hi there. It looks like something blocked the attachment when sent via email.
Could you do us a favor and when the VPN connects, run 2 comands.

On the host, in powershell:
Get-NetRoute

In WSL:
ip route show table 0

(I'm assuming nothing changed how routes are setup in WSL)

[KalleDK]

I can't test only IPv4 today as I'm on location, but it does seems to also not work even when your lan is dualstack.
As in when not connected WSL correctly have ipv4 and ipv6 as expected, but when connected only ipv4 gets routed correctly into the tunnel - ipv6 keeps "working" but by not using the tunnel, and if I add manual route with lover metric to (today its eth2) then ipv6 gets routed correctly through the tunnel.

I did two tests, one on location (which has been anonomized to ffff:1111, and one via mobile hotspot bbbb:cccc. In both cases I connect to the VPN server at ffff:1111

Also small note (don't know if it matters), systemd is enabled in WSL.

On Location ffff:1111

Pre Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
16      172.20.10.255/32                               0.0.0.0                                          256 35       ActiveStore
16      172.20.10.11/32                                0.0.0.0                                          256 35       ActiveStore
16      172.20.10.0/24                                 0.0.0.0                                          256 35       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      0.0.0.0/0                                      172.20.10.1                                        0 35       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
38      fe80::a871:46c5:49ef:7b15/128                  ::                                               256 15       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
16      2a05:ffff:1111:10:89d3:8d2c:9dc3:902c/128      ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10:8205:9c17:9386:708/128       ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10::/64                         ::                                               256 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
16      ::/0                                           fe80::1a5a:58ff:fe39:365                         256 35       ActiveStore

Post Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
16      172.20.10.255/32                               0.0.0.0                                          256 35       ActiveStore
16      172.20.10.11/32                                0.0.0.0                                          256 35       ActiveStore
16      172.20.10.0/24                                 0.0.0.0                                          256 35       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
16      0.0.0.0/0                                      172.20.10.1                                        0 35       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
38      fe80::a871:46c5:49ef:7b15/128                  ::                                               256 15       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
16      2a05:ffff:1111:10:89d3:8d2c:9dc3:902c/128      ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10:8205:9c17:9386:708/128       ::                                               256 35       ActiveStore
16      2a05:ffff:1111:10::/64                         ::                                               256 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
70      ::/0                                           ::                                                 0          ActiveStore
16      ::/0                                           fe80::1a5a:58ff:fe39:365                         256 35       ActiveStore

Pre WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default dev eth2 proto kernel scope link
default via 172.20.10.1 dev eth0 proto kernel metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.20.10.0/24 dev eth0 proto kernel scope link metric 291
172.20.10.1 dev eth0 proto kernel scope link metric 35
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.20.10.11 dev eth0 table local proto kernel scope host src 172.20.10.11
broadcast 172.20.10.255 dev eth0 table local proto kernel scope link src 172.20.10.11
local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
2a05:ffff:1111:10::/64 dev eth0 proto kernel metric 291 pref medium
fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:8205:9c17:9386:708 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:89d3:8d2c:9dc3:902c dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

Post WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default via 172.20.10.1 dev eth0 proto kernel metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.20.10.0/24 dev eth0 proto kernel scope link metric 291
172.20.10.1 dev eth0 proto kernel scope link metric 35
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.20.10.11 dev eth0 table local proto kernel scope host src 172.20.10.11
broadcast 172.20.10.255 dev eth0 table local proto kernel scope link src 172.20.10.11
2a05:ffff:1111:10::/64 dev eth0 proto kernel metric 291 pref medium
fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::1a5a:58ff:fe39:365 dev eth0 proto kernel metric 291 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:8205:9c17:9386:708 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:10:89d3:8d2c:9dc3:902c dev eth0 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium

Via Phone Hotspot bbbb:cccc

Pre Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      10.35.171.255/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.172/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.0/24                                 0.0.0.0                                          256 35       ActiveStore
16      0.0.0.0/0                                      10.35.171.90                                       0 35       ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
38      fe80::9591:6868:90cf:a149/128                  ::                                               256 15       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
16      2a02:bbbb:cccc:11f4:7605:860b:b2ff:827/128     ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936/128    ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4::/64                       ::                                                16 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
16      ::/0                                           fe80::34cc:e7ff:fe04:efc3                         16 35       ActiveStore

Post Host

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore
------- -----------------                              -------                                  ----------- -------- -----------
38      255.255.255.255/32                             0.0.0.0                                          256 15       ActiveStore
6       255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
5       255.255.255.255/32                             0.0.0.0                                          256 5        ActiveStore
22      255.255.255.255/32                             0.0.0.0                                          256 25       ActiveStore
20      255.255.255.255/32                             0.0.0.0                                          256 65       ActiveStore
16      255.255.255.255/32                             0.0.0.0                                          256 35       ActiveStore
1       255.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
38      224.0.0.0/4                                    0.0.0.0                                          256 15       ActiveStore
6       224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
5       224.0.0.0/4                                    0.0.0.0                                          256 5        ActiveStore
22      224.0.0.0/4                                    0.0.0.0                                          256 25       ActiveStore
20      224.0.0.0/4                                    0.0.0.0                                          256 65       ActiveStore
16      224.0.0.0/4                                    0.0.0.0                                          256 35       ActiveStore
1       224.0.0.0/4                                    0.0.0.0                                          256 75       ActiveStore
38      172.27.143.255/32                              0.0.0.0                                          256 15       ActiveStore
38      172.27.128.1/32                                0.0.0.0                                          256 15       ActiveStore
38      172.27.128.0/20                                0.0.0.0                                          256 15       ActiveStore
70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
1       127.255.255.255/32                             0.0.0.0                                          256 75       ActiveStore
1       127.0.0.1/32                                   0.0.0.0                                          256 75       ActiveStore
1       127.0.0.0/8                                    0.0.0.0                                          256 75       ActiveStore
16      10.35.171.255/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.172/32                               0.0.0.0                                          256 35       ActiveStore
16      10.35.171.0/24                                 0.0.0.0                                          256 35       ActiveStore
70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
16      0.0.0.0/0                                      10.35.171.90                                       0 35       ActiveStore
38      ff00::/8                                       ::                                               256 15       ActiveStore
6       ff00::/8                                       ::                                               256 25       ActiveStore
5       ff00::/8                                       ::                                               256 5        ActiveStore
22      ff00::/8                                       ::                                               256 25       ActiveStore
20      ff00::/8                                       ::                                               256 65       ActiveStore
16      ff00::/8                                       ::                                               256 35       ActiveStore
1       ff00::/8                                       ::                                               256 75       ActiveStore
6       fe80::b8bd:7fce:1a68:b1cb/128                  ::                                               256 25       ActiveStore
22      fe80::a737:d9d1:3349:1e34/128                  ::                                               256 25       ActiveStore
38      fe80::9591:6868:90cf:a149/128                  ::                                               256 15       ActiveStore
16      fe80::567c:7143:233b:471f/128                  ::                                               256 35       ActiveStore
5       fe80::2871:cd56:9808:492e/128                  ::                                               256 5        ActiveStore
20      fe80::99e:2b2c:e43c:85d6/128                   ::                                               256 65       ActiveStore
38      fe80::/64                                      ::                                               256 15       ActiveStore
6       fe80::/64                                      ::                                               256 25       ActiveStore
5       fe80::/64                                      ::                                               256 5        ActiveStore
22      fe80::/64                                      ::                                               256 25       ActiveStore
16      fe80::/64                                      ::                                               256 35       ActiveStore
20      fe80::/64                                      ::                                               256 65       ActiveStore
70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
16      2a02:bbbb:cccc:11f4:7605:860b:b2ff:827/128     ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936/128    ::                                               256 35       ActiveStore
16      2a02:bbbb:cccc:11f4::/64                       ::                                                16 35       ActiveStore
1       ::1/128                                        ::                                               256 75       ActiveStore
70      ::/0                                           ::                                                 0          ActiveStore
16      ::/0                                           fe80::34cc:e7ff:fe04:efc3                         16 35       ActiveStore

Diff Host

+70      172.21.0.3/32                                  0.0.0.0                                          256          ActiveStore
+70      0.0.0.0/0                                      0.0.0.0                                            0          ActiveStore
+70      2a05:ffff:1111:255::3/128                      ::                                               256          ActiveStore
+70      ::/0                                           ::                                                 0          ActiveStore

Pre WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default via 10.35.171.90 dev eth0 proto kernel metric 35
10.35.171.0/24 dev eth0 proto kernel scope link metric 291
10.35.171.90 dev eth0 proto kernel scope link metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
local 10.35.171.172 dev eth0 table local proto kernel scope host src 10.35.171.172
broadcast 10.35.171.255 dev eth0 table local proto kernel scope link src 10.35.171.172
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
2a02:bbbb:cccc:11f4::/64 dev eth0 proto kernel metric 51 pref medium
fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936 dev eth0 table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:7605:860b:b2ff:827 dev eth0 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium

Post WSL

127.0.0.1 via 169.254.73.152 dev loopback0 table 127 proto kernel src 127.0.0.1 onlink
default dev eth2 proto kernel scope link
default via 10.35.171.90 dev eth0 proto kernel metric 35
10.35.171.0/24 dev eth0 proto kernel scope link metric 291
10.35.171.90 dev eth0 proto kernel scope link metric 35
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
local 10.35.171.172 dev eth0 table local proto kernel scope host src 10.35.171.172
broadcast 10.35.171.255 dev eth0 table local proto kernel scope link src 10.35.171.172
local 10.255.255.254 dev lo table local proto kernel scope host src 10.255.255.254
broadcast 10.255.255.254 dev lo table local proto kernel scope link src 10.255.255.254
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 172.17.0.1 dev docker0 table local proto kernel scope host src 172.17.0.1
broadcast 172.17.255.255 dev docker0 table local proto kernel scope link src 172.17.0.1 linkdown
local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
2a02:bbbb:cccc:11f4::/64 dev eth0 proto kernel metric 51 pref medium
fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
fe80::/64 dev eth0 proto kernel metric 291 pref medium
default via fe80::34cc:e7ff:fe04:efc3 dev eth0 proto kernel metric 51 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:5d97:95c1:61e4:e936 dev eth0 table local proto kernel metric 0 pref medium
local 2a02:bbbb:cccc:11f4:7605:860b:b2ff:827 dev eth0 table local proto kernel metric 0 pref medium
local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
local fe80::567c:7143:233b:471f dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev loopback0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev docker0 table local proto kernel metric 256 linkdown pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

Diff WSL

+default dev eth2 proto kernel scope link
+local 172.21.0.3 dev eth2 table local proto kernel scope host src 172.21.0.3
+broadcast 172.21.0.3 dev eth2 table local proto kernel scope link src 172.21.0.3
+local 2a05:ffff:1111:255::3 dev eth2 table local proto kernel metric 0 pref medium
+multicast ff00::/8 dev eth2 table local proto kernel metric 256 pref medium

[KalleDK]

Keith Horton (@keith-horton) hope that helps - I can get a ipv4 only test tommorow, when I'm on a site without ipv6.

[KalleDK]

And for your comment on nothing is changed in how routes are setup. I don't belive I've got anything inside WSL changing routes (thats not WSL iself). The wireguard profile is setup to route all ipv4 and all ipv6 through the tunnel, which is what i happening on the host side.

[keith-horton]

Thanks. This might be difficult to troubleshoot without WSL traces - but there's an obvious route missing:

default dev eth2 proto kernel scope link <<<< this is missing in Post
default via 172.20.10.1 dev eth0 proto kernel metric 35 <<< this exists in both

this of course gets more complicated with docker-managed interfaces (docker0) - but hopefully that's not interfering.

do you have a cloud storage location you should share your traces? or maybe put them in a zip/tar and try to email them again?

thanks!

This route looks odd as it doesn't have an interface metric listed - so there may be something unique about this route that I might need to handle when mirroring these routes.

70 0.0.0.0/0 0.0.0.0 0 ActiveStore

[KalleDK]

Which traces would you have me do? ( https://github.com/microsoft/WSL/blob/master/CONTRIBUTING.md#collect-wsl-logs-for-networking-issues ) ?

[keith-horton]

Could you run https://github.com/microsoft/WSL/blob/master/diagnostics/collect-networking-logs.ps1? Please wsl --shutdown after running the script then connect wireguard. Thanks!