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Hi,

I have fairly simple setup, but cannot make WireGuard work over IPv6.

Interfaces:
WAN: My ISP provided IPv4
WANv6: HE IPv6 Tunnel Broker
WG: WireGuard

Now when I use IPv4 endpoint on client peer it works flawlessly. But when I use IPv6 it doesn't work. Handshake packets come through from client as I see peer IPv6 address on opnsense and I see both TX/RX traffic. But on client peer I see only TX, never got any packet back. Looks like WG server responses are lost.

Any idea how to diagnose/resolve this?

Thanks,
Kacper