Comment by throw0101a
7 days ago
Sorry, I'm still not seeing how a IPv4+ would be any less complicated (or as simple) as IPv6. In either case you would still have to:
* roll out new code everywhere
* enable the protocol on your routers
* get address block(s) assigned to you
* put those blocks into BGP
* enable the protocol on middleware boxes
* have translation boxes for new-protocol hosts talk to old-protocol-only hosts
* enable the protocol on end hosts
And just because you do it, does not mean anyone else would do in the same timeframe (or ever). You're back in the chicken-and-egg of whether servers/services do it first ("where are the clients?"), or end-devices ("where are the services?").
Everything you listed was already done for ipv6 or is trivial to enable, but people still aren't switching, because of all the things you didn't list.
What did they not list?
Redo all your addresses and routes, reconfigure or replace NAT and DHCP, reconfigure firewall, change your DNS entries at minimum. If it's a home or small business and you don't want to fight the defaults, you go from NAT to NATless.