[El_RIDO]

> What is hard, is dual stack networking. Dual stack networking absolutely sucks, [...]

Clearly you have gotten some unfortunate hands on experience with those edge cases. In my uses the dual-stacking of IPv4 & IPv6 has been a big benefit in that I have to worry a lot less about locking myself out of systems, as I can always reconnect and correct configuration mistakes on the second stack.

Comparing the IPv4+IPv6 dual-stack story to the one from the 90s of IPv4 with IPX/SPX (Novell Netware) and/or NetBIOS (Microsoft Windows), the current state is a lot more smooth and robust.

I've so far only run into 3 issues over the years (2013 till now). A local train operator running IPv6 on routers that didn't properly support non-default MTU sizes (fragmented packages getting dropped) and Microsoft where Github is still IPv4-only and Teams recently developed an IPv6-only failure on a single API endpoint.

Should we ever turn off IPv4 during my working life-time, I hope we have at that point introduced a successor to IPv6, so I can keep using a dual- or triple-stack solution, using different network protocols for robustness.