[ipv6-wg] IPv6 on P2P links

When I was doing the config for Interop two weeks ago in Las vegas (I
was the lead 
of the design and implementation there), then we used /127 actually... a
weird 
thing from an engineering perspective is that addressing looks weird
actually if 
one is used for /30's in a v4 world...

For example:

2001:db8:C15c:0::/127 has as two addresses on the link:
2001:db8:C15c:0::/127 (this one looks weird to start of with actually)
and 2001:db8:C15c:0::1/127

While if it would have been a /126
2001:db8:C15c:0::1/126 and 2001:db8:C15c:0::2/126

Which matches much more the /30 stuff in v4:
192.168.1.1/30 and 192.168.1.2/30

I can tell you many people were very confused about this little change
and as result many made mistakes configuring p2p's during the Interop
event

G/

-----Original Message-----
From: ipv6-wg-admin at ripe.net [mailto:ipv6-wg-admin at ripe.net] On Behalf
Of Marco Hogewoning
Sent: 26 May 2011 10:36
To: Pierre-Yves Maunier
Cc: Jasper Jans; ipv6-wg at ripe.net
Subject: Re: [ipv6-wg] IPv6 on P2P links

> on our side we use /126 for P2P links. I've heard some others using
/64 or /127.
> Some allocate a /64 but configure a /126 to always have :1 and :2 in
order to avoid mistakes by calculating the good hosts ip addresses.

Curious, why did you pick /126 ? What do you do with ::0 and ::3 ?

Marco