←back to thread

Using the Internet without IPv4 connectivity

(jamesmcm.github.io)
296 points jmillikin | 1 comments | 29 Jun 25 08:23 UTC | HN request time: 0.298s | source
Show context
b0a04gl ◴[29 Jun 25 11:00 UTC] No.44412087[source]▶
ipv6 only machine still reaches ipv4 sites because dns64 upstream is just faking AAAA records ,makes it look like everything is native ipv6. this part of the trick is happening somewhere else which's not controllable. if dns64 breaks or stops doing the mapping properly then this might break
replies(2): >>44415163 #>>44425261 #
1. tatersolid ◴[29 Jun 25 18:21 UTC] No.44415163[source]▶
In IPv4 if your NAT or your ISPs CGNAT stops mapping everything breaks.

Having a stateful mapping device inline in the network sucks for reliability in general. Native IPv6 removes the requirement.