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.