Piracy

Sorry for the delay, just saw this.

So the "pvpnsomthingsomething" is most likely the name of the server you're connecting to, but if you're not using the paid tier for Proton it won't let you select servers that support peer to peer traffic. Sounds like that might be your issue if you're still getting stalled with that network connection selected.

Also, the killswitch and the ipv6 "networks" that it creates are just there to enforce the killswitch (ie. create a fallback dead-end network device if the VPN goes down) and to catch and dead-end any ipv6 traffic that might be leaking.