>An IPv6 router with a stateful firewall blocking incoming connections could have just the same issues with timeouts, I'd imagine.
You'd be surprised... PCP (Port Control Protocol) implemented by large vendors such as Cisco and Apple are able to punch through a firewall for up to 24 hours in a single session.
You'd be surprised... PCP (Port Control Protocol) implemented by large vendors such as Cisco and Apple are able to punch through a firewall for up to 24 hours in a single session.
https://github.com/Self-Hosting-Group/wiki/wiki/Port-Mapping...