Comment by beeflet
3 days ago
sounds great but it fucks up P2P in residential connections, where it is mostly used due to ipv4 address conservation. You can still have nat in IPv6 but hopefully I won't have to deal with it
3 days ago
sounds great but it fucks up P2P in residential connections, where it is mostly used due to ipv4 address conservation. You can still have nat in IPv6 but hopefully I won't have to deal with it
In practice, P2P over ipv6 is totally screwed because there are no widely supported protocols for dynamic firewall pinholing (allowing inbound traffic) on home routers, whereas dynamic ipv4 NAT configuration via UPnP is very popular and used by many applications.
Most home routers do a form of stateful IPv6 firewall (and IPv4 NAT for that matter) compatible with STUN. UPnP is almost never necessary and has frequent security flaws in common implementations.
You just send a (UDP) packet to the other side's address and port and they send one to yours. The firewalls treat it as an outbound connection on both sides.
I don't believe that's true. You would still need something like UDP hole punching to bootstrap the inbound flow on both sides first. Also you would still only be limited to UDP traffic, TCP would still be blocked.
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You just need to tell the other side that you want to connect.
just don't use a firewall