FS#3866 - no network in failsafe

[openwrt-bot]

SAm0815:

Adapting my configs to the new-bridge setup I realized that failsafemode is broken.

Device: TPLink WDR-3600 (ath79-generic)
Release: OpenWrt-21.02.0-rc2, snapshot "r16916-7f946a880a"

• just installed the images from download.openwrt.org via "sysupgrade -n"
• booted up regularly
• login via SSH
• reboot command
• entered failsafe via "button"
• sys-led starts to blink fast
• can not ping of ssh to 192.168.1.1
• can not see a reply when ping ff02::1

[openwrt-bot]

SAm0815:

I can confirm this also on a Mikrotik RB750GR3 (ramips-mt7621; OpenWrt-21.02.0-rc2).
For some other issue I had to hook up serial-console get some data

Networkconfig seems unconfigured at all:

root@(none):/# ip addr
1: lo: mtu 65536 qdisc noop state DOWN qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1504 qdisc fq_codel state UP qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff
inet6 fe80::4fe:91ff:fe77:e0ea/64 scope link
valid_lft forever preferred_lft forever
3: wan@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff
4: lan2@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff
5: lan3@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff
6: lan4@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff
7: lan5@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fe:91:77:e0:ea brd ff:ff:ff:ff:ff:ff


I'm also not sure if the mt7520-switch is setup correctly, as I can't see any port is reporting a link in kernel-log.

[openwrt-bot]

SAm0815:

Also present in OpenWrt-21.02.0-rc3 (tested with TPLink WDR3600)

[openwrt-bot]

hnyman:

Looks like we are still looking for "ifname" in preinit, although the board.json has been changed to contain "device" instead of "ifname".

Preinit:

openwrt/package/base-files/files/lib/preinit/10_indicate_preinit

Line 75 in ec6293f

json_get_vars ifname

json_select network json_select "lan" json_get_vars ifname json_select .. json_select ..

From board.json

"network": {
"lan": {
"device": "eth1.1",
"protocol": "static"