OPNsense Forum
Archive => 20.7 Legacy Series => Topic started by: Voodoo on November 09, 2020, 02:55:37 pm
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I have a ipv6 wan dhcp setup which works fine except it stops working every 3-6 weeks.
The system log gets spammed with:
in6_ifadd: xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx is already configured
I have to interfaces -> overview -> wan -> dhcp reload, to make it work again.
The ipv6 i get from my isp has a static prefix and i think this messes up the dhcp lease.
Opnsense should ignore if its the same ip and just go with it, right now its killing the interface ?!
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I've seen mine lose their IPv6 address and delegated prefix, but usually can't get it back without turning everything off, and then waiting a while before turning it back on.
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Perhaps this may help:
https://github.com/opnsense/core/issues/4338
It solved my problem.
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Thanks for the update, I will restart the daemon next time the problem occurs to verify if its the same problem and apply the patch.
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Restarting radvd didn't work for me. You can also try to restart DHCPv6 service, but this wasn't a very consistent solution for me. One time it did work and another time it didn't.
Going back to 20.1 made my system rock solid again.
As I understand it it is all still under investigation.
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Is this fixed in 21.7.5? Don't see any menchion of RADVD in the change log.
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Apparently not fixed yet, and if you applied the patch for rtadvd (which is a direct replacement for radvd and native to freebsd) you'll need to reapply it after upgrade.
opnsense-patch 9a4a908 (per link above in this thread)
Edit: modified patch version (per below)
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I believe it is superseded by opnsense-patch 9a4a908
see https://github.com/opnsense/core/pull/4461
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I believe it is superseded by opnsense-patch 9a4a908
see https://github.com/opnsense/core/pull/4461
Thanks!