nanog mailing list archives
Re: v6 & DSL / Cable modems
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Fri, 6 Feb 2009 16:14:33 +0100
On 6 feb 2009, at 16:02, Joe Loiacono wrote:
Given that ARIN at least is assigning end-user /48s out of 2620::/23 it would be useful to accept these announcements. If not end-user PI is dead in the water. Some providers might like that. End-users probably won't.
That range alone is 25 bits of routing, equivalent to routing all the way down to /25s in the IPv4 world. But I don't see how you could route some /48s without having software to route all /48s and that is hugemongous. And then times 4 for 128 bits. But, I'm not a routing engine guy, so I'mprobably missing something ...
The problem is that ARIN reserves a /44 for every /48 they give out. So that means the most you'll see out of that /23 is 2M prefixes (I don't think there are many routers out there that can handle a v6 table this large) but since you need to accept /48s, this could be deaggregated into 32M prefixes.
The RIRs need to stop this reservation stuff, it makes prefix length filtering impossible.
Current thread:
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)], (continued)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] David W. Hankins (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Joe Abley (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] David W. Hankins (Feb 05)
- Re: v6 & DSL / Cable modems Paul Vixie (Feb 05)
- Re: v6 & DSL / Cable modems Joe Loiacono (Feb 06)
- Re: v6 & DSL / Cable modems Jack Bates (Feb 06)
- Re: v6 & DSL / Cable modems Stephen Kratzer (Feb 06)
- Re: v6 & DSL / Cable modems Tim Durack (Feb 06)
- Re: v6 & DSL / Cable modems Joe Loiacono (Feb 06)
- Re: v6 & DSL / Cable modems Tim Durack (Feb 06)
- Re: v6 & DSL / Cable modems Iljitsch van Beijnum (Feb 06)
- RE: v6 & DSL / Cable modems TJ (Feb 07)
- Re: v6 & DSL / Cable modems Jack Bates (Feb 06)
- Re: v6 & DSL / Cable modems Matthew Kaufman (Feb 06)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Iljitsch van Beijnum (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] James R. Cutler (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Jack Bates (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] David W. Hankins (Feb 05)
- RE: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] TJ (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Nathan Ward (Feb 06)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] David W. Hankins (Feb 05)