Point-to-point /64

[sthaug at nethelp.no]

> > I do /127 p2p
> > 
> > Subnet anycast is not a supported feature or requirment in my network.
> 
> As subnet anycast is a integral part of IPv6, you might not want to
> support or require it, but the gear will implement it and thus one point
> it will bite you as suddenly it won't work.
> 
> Likely though you are just putting the PtP links as 2x /128 and not as a
> /127 on the link. The former works, the latter breaks.

Funny, /127 works great for "real" point to point links (SDH). I tried
it just now on an Ethernet link between a JunOS 11.4 box and an IOS XR
4.2.3 box in my lab - and it seems to work just great there too.

What is the real usage of IPv6 subnet anycast?

Steinar Haug, AS 2116