18.06.4 - Wireguard Client

[lleachii]

@asterios

inet6 fd42:42:42::2/64 scope global

Were you issued Global IPv6 addresses?

This IP is local.

Also see:

Help with ipv6 configuration for router connected to wireguard tunnel

A single (/128) address won't be enough for more than one host anyway since IPv6 masquerade isn't supported by openwrt. But a ULA prefix assigned by the VPN service provider should work if they apply NAT or NTP to the traffic destined for the internet.