[SOLVED] radvd not starting

[Gromhelm]

Since the last update, my radvd is not starting. It looks like playing with IPv6 (and finally disabling it again), I have  recurring problems with the DHCPv6 and radvd service.

Tried to reset everything following https://forum.opnsense.org/index.php?topic=34584.0 this did not solve my issue. radvd still not starting, even if clicked manually. There is also no error in logs.

When following the above guide, I got:

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2023-12-17T08:06:34 Error opnsense /interfaces.php: The command '/sbin/ifconfig 'igb3'
inet6 '::1' prefixlen '128' no_dad' returned exit code '1', the output was 'ifconfig:
ioctl (SIOCDIFADDR): Invalid argument'
2023-12-17T08:06:31 Error opnsense /interfaces.php: The command '/sbin/ifconfig 'igb2'
inet6 '::1' prefixlen '128' no_dad' returned exit code '1', the output was 'ifconfig:
ioctl (SIOCDIFADDR): Invalid argument'
2023-12-17T08:06:27 Error opnsense /interfaces.php: The command '/sbin/ifconfig 'igb1'
inet6 '::1' prefixlen '128' no_dad' returned exit code '1', the output was 'ifconfig:
ioctl (SIOCDIFADDR): Invalid argument'


But I cannot assign this to any specific action.

Where would I start debugging starting of radvd?

[meyergru]

radvd needs an assigned IPv6 for the interfaces in order to derive the RA broadcasts from that.
The error message seems to indicate that your interfaces do not have a valid IPv6 in the first place.

[Gromhelm]

Thank you. So this means this is normal and should be expected, when IPv6 is disabled?

[meyergru]

Yes, it does not make much sense to start radvd when IPv6 is disabled altogether.

[Gromhelm]

Great, thank you for the confirmation!

I think this was new, which is why radvd not starting caught my eye and got me worried.