why wireguard suddenly doesn´t work anymore?
When I try to enable it I get “invalid IP address” error. This is simply a bug because before this issue didn´t exist.
Router is GL-MT300N-V2
It is a bug when you upgrade from old firmware. Here are what you can do to fix this:
SSH to the router and issue the two command
uci set wireguard_server.@servers.local_ipv6='fd00:db8:123::1' uci commit
Or just reset the firmware and start over.