nanog mailing list archives
Re: Using /126 for IPv6 router links
From: Mark Smith <nanog () 85d5b20a518b8f6864949bd940457dc124746ddc nosense org>
Date: Sun, 24 Jan 2010 12:33:18 +1030
On Sat, 23 Jan 2010 20:08:05 -0500 Christopher Morrow <morrowc.lists () gmail com> wrote:
On Sat, Jan 23, 2010 at 7:52 AM, Mathias Seiler <mathias.seiler () mironet ch> wrote:Hi In reference to the discussion about /31 for router links, I d'like to know what is your experience with IPv6 in this regard. I use a /126 if possible but have also configured one /64 just for the link between two routers. This works great but when I think that I'm wasting 2^64 - 2 addresses here it feels plain wrong. So what do you think? Good? Bad? Ugly? /127 ? ;)<cough>draft-kohno-ipv6-prefixlen-p2p-00.txt</cough> (<http://tools.ietf.org/id/draft-kohno-ipv6-prefixlen-p2p-00.txt>)
<cough>Internet Draft</cough> No disrespect to the people who've written it, however it's a draft at this point, not an RFC. The current IP Version 6 Addressing Architecture RFC (RFC4291) says, " For all unicast addresses, except those that start with the binary value 000, Interface IDs are required to be 64 bits long and to be constructed in Modified EUI-64 format" If that draft is going to go anywhere, then I would expect there also needs to be a new version of RFC4291.
why not just ping your vendors to support this, and perhaps chime in on v6ops about wanting to do something sane with ptp link addressing? :) -Chris
Current thread:
- Re: Using /126 for IPv6 router links, (continued)
- Re: Using /126 for IPv6 router links Dobbins, Roland (Jan 23)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 23)
- Re: Using /126 for IPv6 router links Dobbins, Roland (Jan 23)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 23)
- Re: Using /126 for IPv6 router links Dobbins, Roland (Jan 23)
- Re: Using /126 for IPv6 router links James Hess (Jan 23)
- Re: Using /126 for IPv6 router links Dobbins, Roland (Jan 23)
- Re: Using /126 for IPv6 router links James Hess (Jan 23)
- Re: Using /126 for IPv6 router links David Freedman (Jan 25)
- Re: Using /126 for IPv6 router links Christopher Morrow (Jan 23)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 23)
- Re: Using /126 for IPv6 router links Christopher Morrow (Jan 23)
- Re: Using /126 for IPv6 router links Ron Bonica (Jan 26)
- Re: Using /126 for IPv6 router links Christopher Morrow (Jan 26)
- Re: Using /126 for IPv6 router links Larry Sheldon (Jan 23)
- Re: Using /126 for IPv6 router links Brandon Galbraith (Jan 23)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 23)
- Re: Using /126 for IPv6 router links Owen DeLong (Jan 23)