Using /126 for IPv6 router links

Christopher Morrow morrowc.lists at gmail.com
Sat Jan 23 19:08:05 CST 2010


On Sat, Jan 23, 2010 at 7:52 AM, Mathias Seiler
<mathias.seiler at 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>)

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




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