[195735] in North American Network Operators' Group
Re: IPv6 Loopback/Point-to-Point address allocation
daemon@ATHENA.MIT.EDU (sthaug@nethelp.no)
Sun Sep 10 10:07:39 2017
X-Original-To: nanog@nanog.org
Date: Sun, 10 Sep 2017 15:09:11 +0200 (CEST)
To: erey@ernw.de
From: sthaug@nethelp.no
In-Reply-To: <20170910130300.GC90730@ernw.de>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> > 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@nethelp.no
