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Now that is strange, I can ping google and my next hop on the router.
2401:d002:2302:b00:9ae7:f4ff:fe67:e871

But can't ping the quad9 ipv6 dns servers.
2620:fe::fe
2620:fe::9

Perhaps they are filtering ICMP. Could someone with working ipv6 please ping one of the above and let me know if you get a response.

Thanks Bart, I'll give it a shot.

LAN was already there but I had it as assisted. I've set it to unmanaged.

I have a dual stack link and today I had no internet because the ipv6 wan interface had no IP address. I'm not able to properly evaluate it's state so the gateway group doesn't work.
Id like to have a ping working so i can monitor the link and flick back to ipv4 if ipv6 isn't working.


root@router:~ # ping 2401:d002:2302:b00:9ae7:f4ff:fe67:e871
ping: cannot resolve 2401:d002:2302:b00:9ae7:f4ff:fe67:e871: Host name lookup failure
root@router:~ # ping 2620:fe::fe
ping: cannot resolve 2620:fe::fe: Host name lookup failure
root@router:~ # ping6 2620:fe::fe
ping6: UDP connect: No route to host
root@router:~ #


Update: As I have come to understand, it seems the addition of an ipv6 gateway into a gateway group causes some ipv6 strangeness. I have taken the ipv6 gateway out of the group and things have settled.

Thanks Bart, I'll give it a shot.

OPNsense 21.1.3_3-amd64
FreeBSD 12.1-RELEASE-p14-HBSD
OpenSSL 1.1.1j 16 Feb 2021

Where do I start, I have a native dual stack link via DHCP ethernet wan (Cable modem).

Everything works, except for DNS. I have disabled unbound DNS and installed AdGaurd as that's what I was using before i got into opnsense. It works fine, but the IPv6 config wants to assign my quad 9 public DNS servers to the client which then does lookups on a public server rather than my lan local dns.

I've tried disabling it under settings for the WAN interface but still coming through.

Any ideas? I've searched a bit and can't find the cause for this particular issue.

UPDATE: I've since discovered deeper ipv6 issues and beleive this to be a downstream issue. No resolution.