|reply to Samwoo |
Re: 6RD Tunneling
said by Samwoo:
they still fall into the IPv4 address shortage, because they would still need IPv4 to route the tunnels across their internal network.
If you put the 6rd servers before the CGN NAT gateway, they can use RFC 1918 space for 6rd. Adds complexity but it can be done.
I suspect 6rd was just an emergency sort of thing. New hardware I'm sure will natively support v6 in say a year.
Yes, Comcast ended the 6rd trial as is was not the correct path forward -- that is a native IPv6 network.
AT&T has decided to be boneheaded and roll with 6rd as their road to IPv6. So they'll be doing IPv6 deployment TWICE because the idiots don't want to take the time to do it right from the beginning. 6rd *requires* IPv4 for it's transport, and puts your IPv4 address in it's IPv6 prefix, which the entire f'ing world will see. As I've pointed out previously, you can use private addresses within 6rd, but then you're forced to use multiple IPv6 prefixes to create 6rd islands to avoid address collisions.
AT&T has *PLENTY* of IPv4 address space. They only way they could be out of space (or anywhere remotely near out) would be from extreme wasteful mismanagement of their blocks -- which would given ARIN the authority to revoke address blocks (not that they would bother.)
said by cramer:
AT&T has *PLENTY* of IPv4 address space.
I wonder if they plan to sell much like Nortel did. They could raise enough cash to cover their CGN operations and pocket some extra.