IPv6 Loopback/Point-to-Point address allocation

Sun Sep 10 13:09:11 UTC 2017

> > Null-routing may not be sufficient, if the edge/border router has a
> > route to that /128; the (forwardable) /128 entry will win from the
> > blackholed /64 FIB entry since it is more-specific.
> 
> just thought about it a bit.
> As mentioned (in other post) I was thinking of a specific use case/setting, but wouldn't a static null-route (of a blackholed /64) win over a /128 learned from a RP anyway (given the better AD)?
> Am I missing sth here?

Longest prefix match wins.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no