IPv6 rule only works sometimes - Default deny / state violation rule triggered

[lukas-vs]

Hello everyone,

I have a strange problem and after countless hours of troubleshooting and testing I am out of ideas.

I have a rule that allows all IPv4 and IPv6 traffic from the network to each destination, and the rule works sometimes, but most of the time it gets blocked and I don't know why.

Does anyone have any ideas where I can look or what the problem might be?


Both networks are local networks, the interfaces are configured as static IPv6; no problems when using ipv4


Current version: OPNsense 24.7.9_1-amd64