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Even without NAT, the same hole punching techniques must be used for IPv6 since there is usually a firewall blocking inbound traffic. Only in CGNAT type scenari
by derkades 1mo ago
Even without NAT, the same hole punching techniques must be used for IPv6 since there is usually a firewall blocking inbound traffic. Only in CGNAT type scenarios where the network behind NAT is still "WAN" will be helped by IPv6.
- jcgl 1mo agoThis point applied to normal NAT as well as CGNAT specifically. And hole punching gets a lot simpler when you’re behind NAT since you don’t need any kind of rendezvous server to determine port mappings. In other words, IPv6 does help substantially—the same hole punching techniques are not needed.