A trouble with WireGuard is that it is only udp

Another trouble is that
— som sites, like AWS, only offers IPv6 for free, not IPv4
— outdated public Wi-Fi may only support IPv4, no IPv6
— outdated public Wi-FI may only support tcp port 443

Therefore,

Proton VPN should support WireGuard udp encapsulated in SOCKS5 server port tcp/443

This is supported by the Android non-root outbound firewall Rethink
— tunneled traffic should be both IPv4 and IPv6
— transport traffic should be be both IPv4 and IPv6

Proton holds antiquated views on IPv6:
— After aws 2023 charges for IPv4, it is now obsolete
— all services’ primary transport should be IPv6
— no one needs IPv4 ever
— ipv4 is only offered for the pre-2023 legacy public configurations

Please understand it’s IPv6 from now on