bgpd: Use IPv6 LL address as nexthop if global was set to ::/LL #6456
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This happens between Bird and FRR. Maybe others as well, dunno.
Bird sends ::(fe80::1588) and we have a nexthop as :: which is inaccessible:
```
BGP routing table entry for fdff:b87d:f5b0::/48
Paths: (1 available, no best path)
Not advertised to any peer
4242421588 4242422547 4242422601 4242423605
:: (inaccessible) from fe80::1588 (172.20.16.140)
(fe80::1588) (used)
Origin IGP, invalid, external
Last update: Mon May 25 14:27:02 2020
```
bgpd[9554]: fe80::1588 went from OpenConfirm to Established
bgpd[9554]: fe80::1588 [FSM] Timer (routeadv timer expire)
bgpd[9554]: fe80::1588 rcvd UPDATE w/ attr: , origin i, mp_nexthop ::(fe80::1588)
bgpd[9554]: fe80::1588 rcvd UPDATE wlen 0 attrlen 120 alen 0
bgpd[9554]: fe80::1588 rcvd fda9:26a9:1c47:2d42::/64 IPv6 unicast
bgpd[9554]: Allocated bnc ::/128(VRF default) peer 0x0
bgpd[9554]: bgp_update(0.0.0.0): NH unresolved
bgpd[9554]: fe80::1588 rcvd fda9:26a9:1c47:d42::/64 IPv6 unicast
Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
💚 Basic BGPD CI results: SUCCESS, 0 tests failedResults table
For details, please contact louberger |
Continuous Integration Result: SUCCESSFULCongratulations, this patch passed basic tests Tested-by: NetDEF / OpenSourceRouting.org CI System CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-12397/ This is a comment from an automated CI system. Warnings Generated during build:Debian 10 amd64 build: Successful with additional warningsDebian Package lintian failed for Debian 10 amd64 build: |
|
Fix works for me and solves this issue for me. |
riw777
approved these changes
May 26, 2020
srimohans
approved these changes
May 27, 2020
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This happens between Bird and FRR. Maybe others as well, dunno.
Bird sends ::(fe80::1588) and we have a nexthop as :: which is inaccessible:
bgpd[9554]: fe80::1588 went from OpenConfirm to Established
bgpd[9554]: fe80::1588 [FSM] Timer (routeadv timer expire)
bgpd[9554]: fe80::1588 rcvd UPDATE w/ attr: , origin i, mp_nexthop ::(fe80::1588)
bgpd[9554]: fe80::1588 rcvd UPDATE wlen 0 attrlen 120 alen 0
bgpd[9554]: fe80::1588 rcvd fda9:26a9:1c47:2d42::/64 IPv6 unicast
bgpd[9554]: Allocated bnc ::/128(VRF default) peer 0x0
bgpd[9554]: bgp_update(0.0.0.0): NH unresolved
bgpd[9554]: fe80::1588 rcvd fda9:26a9:1c47:d42::/64 IPv6 unicast
Signed-off-by: Donatas Abraitis donatas.abraitis@gmail.com