RE: estimation of number of DFZ IPv4 routes at peak in the future

["George Bonser" <gbonser () seven com>]

> From: Randy Bush 
> Sent: Tuesday, March 08, 2011 7:44 PM
> To: Mikael Abrahamsson
> Cc: nanog () nanog org
> Subject: Re: estimation of number of DFZ IPv4 routes at peak in the
> future
>
> i am more of a pessimist.  i suspect that there will be enough v4-only
> destinations out there that multi-homed enterprises fronting onto
> dual-stack backbones will announce teenie bits of v4 so they can
nat64.
> randy

I suspect people will get varying experiences with that.  That they will
attempt to multi-home with teenie bits of v4 I don't disagree with but
that teenie bit better be part of a larger aggregate that can reach at
least one of their runs home. There will likely be considerable
filtration once there is enough dual-stack pressure put on gear, and v6
being where the growth is it will get priority.  Dual-homing to their
ISP might be a compromise solution seen more often with v4 in that
scenario.