Only 5x IPv4 /8 remaining at IANA

Thu Oct 21 19:25:18 UTC 2010

> From: Dan White 
> Sent: Thursday, October 21, 2010 8:30 AM
> To: Ben Butler
> Cc: NANOG
> Subject: Re: Only 5x IPv4 /8 remaining at IANA
> 
> 
> I think that's the $64K question. Do you wait to roll out v6 until you
> start seeing v6-only hosts start popping up? From an accounting and
> cost
> recovery stand point, that probably makes sense in some environments.

And so everyone is waiting for everyone else to see IPv6 traffic.  Which
is sort of where we are now.  Everyone is standing around the pool
waiting for everyone else to jump in.  The usual "early adopters" are in
there but people are still waiting for "Mikey" to see if he likes it.

> However, consider the fact that there will be v6 only hosts popping up
> after IANA/RIR/ISP exhaustion. There will be new entrants in the
public
> internet space that cannot obtain v4 addresses and will be reachable
> via v6
> only ...

Yep, you can't do NAT64 if you don't have "4".  But that said, just
because ARIN is exhausted doesn't mean PA space is exhausted so there
will be addresses available though it will be tight.