Hi everyone,
The team is aware that many Swedish service providers have implemented IPv6 at the residential level (with DS-Lite IPv4 tunneling sometimes available, but implemented in such a way that it doesn’t allow for port forwarding). Bollnas, Gavelent, Soderhamm Nara, Sandnet, Ljusnet, Bredband2, Bredbandsbolaget have all rolled out some form of carrier-grade NAT since 2014, to give examples that I can think of so far.
Telia, Telia Öppen Fiber, and certain Splitvision plans do not appear to have universally implemented carrier-grade NAT that interferes with port forwarding.
The implementation of IPv6 and whether a routable/public IPv4 address might be available will vary widely by service provider, depending on your locality.
I strongly suggest if you’re encountering a 502 error in your port forwarding diagnostics, you still post here or in a dedicated topic thread, and the tech support team will have a look at your network and connectivity situation. There may still be a double NAT layer at the local network level responsible, and port forwarding may still be possible.
Until then, please recognize that we understand your frustration, and we’re investigating solutions to IPv6 implementation that will open up ARC to as many Roon users as possible.