I have dropped ASUS the question around Wireguard and Co-usage of IPv4 and IPv6 for the DSL-AX82U – will let you know what they say. Alas, I do not have my DSL-AX82U plugged in currently, so cannot check if IPv4 and Ipv6 is supported. For reference: https://www.asus.com/support/FAQ/1048280/
It is possible to enter an IPv6 address, but it is not possible to enter both an IPv4 and an IPv6 address at the same time, which is causing issues with the VPN not working properly. When I tried to enter them separated by a comma, it accepted the input, but still, the IPv6 VPN is not working.
And the MTU option is also not visible.
[Interface]
Address = 172.16.0.2/32 (IPv4)
Address = 2606:aaaa:bbbb:cccc:dddd:eeee:bbbb:ffff/128 (IPv6)
[Peer]
AllowedIPs = 0.0.0.0/0 (IPv4)
AllowedIPs = ::/0 (IPv6)
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