nanog mailing list archives
Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)]
From: Mark Andrews <Mark_Andrews () isc org>
Date: Thu, 05 Feb 2009 12:32:33 +1100
In message <498A3CA5.6060801 () internode com au>, Matthew Moyle-Croft writes:
Anthony Roberts wrote:On Thu, 05 Feb 2009 11:08:44 +1030, Matthew Moyle-Croft <mmc () internode com au> wrote:Let's face it - the current v6 assignment rules are to solve a 1990s set of problems. A /64 isn't needed now that we have DHCP(v6).It's needed to prevent people from NATing in v6, as they'll still want their stuff behind a firewall, and some of them will want subnets.Why do we want to prevent people using NAT? If people choose to use NAT, then I have no issue with that. This anti-NAT zealotism is tiring and misplaced.
NAT's break lots of things and increase the development costs of every piece of network based software being written. If we could get a true accounting of the extra cost imposed by NAT's I would say it would be in the trillions of dollars. NAT's are a necessary evil in IPv4. If every node that currently communicates to something the other side of a NAT was to have a global address then we would have already run out of IPv4 addresses. NAT's are not a necessary evil in IPv6. Just stop being scared to renumber. Addresses are not forever and when you design for that renumbering get easier and easier. For everything else there are alternate solutions.
Setting the idea in people's heads that a /64 IS going to be their own statically is insane and will blow out provider's own routing tables more than is rational.No larger than their ARP tables are now.And ARP tables are propogated around networks? No, they're local to a router. MMC -- Matthew Moyle-Croft - Internode/Agile - Networks Level 4, 150 Grenfell Street, Adelaide, SA 5000 Australia Email: mmc () internode com au Web: http://www.on.net Direct: +61-8-8228-2909 Mobile: +61-419-900-366 Reception: +61-8-8228-2999 Fax: +61-8-8235-6909
-- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews () isc org
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)] Seth Mattinen (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Matthew Moyle-Croft (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Nathan Ward (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Mark Andrews (Feb 04)
- RE: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] TJ (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Leo Bicknell (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Matthew Moyle-Croft (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Owen DeLong (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] George William Herbert (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)] Mark Andrews (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Seth Mattinen (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Nathan Ward (Feb 04)
- RE: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] TJ (Feb 04)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Matthew Moyle-Croft (Feb 04)
- 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)] John Schnizlein (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Paul Timmins (Feb 05)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Tony Finch (Feb 06)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Paul Jakma (Feb 06)
- Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)] Matthew Moyle-Croft (Feb 06)