Proton VPN?
And no, proxies were either never obsoleted or they were obsoleted by routing. Nothing to do with v6.
My bar for "support" is higher than "linux only and you need IPv4 to initialize".
https://protonvpn.com/support/prevent-ipv6-vpn-leaks
My bar for "support" is higher than "linux only and you need IPv4 to initialize".
https://protonvpn.com/support/prevent-ipv6-vpn-leaks