Forum Discussion
ipv4/cgnat down again
same thing happened 20 days ago https://community.t-mobile.com/tv-home-internet-7/ipv4-went-down-90-of-the-internet-is-down-47041 support “experts” are clueless, they don't know what dns is, what ipv...
It is common to refer to CGNAT but I believe the reality is that the solution is in reality 464XLAT. Cross translation of IPv4 to IPv6 & back to IPv4 which is a bit of an evolution over CGNAT. The dual stack solution seems to also take this to a hybrid routing solution depending upon the type of traffic.
The goal is to move forward to IPv6 which would resolve the limitations of IPv4 and would probably eliminate a considerable amount of complexity.
I know just sharing that as it provides both the IPv6 and IPv4 and if one or the other was not resolving that might be good to know. I have seen times when there is clearly both cellular signals and clients that have no internet notifications. If i just statically asking the DNS servers I have seen that to be a fix when the DNS is nor resolving through the default DNS via the gateway IP.
