BCP: Slicing a /32 for an ISP
mohacsi at niif.hu
Mon Apr 14 09:55:17 CEST 2008
On Mon, 14 Apr 2008, Simon Lockhart wrote:
> On Mon Apr 14, 2008 at 09:21:22AM +0200, Mohacsi Janos wrote:
>> We are using /64 mainly where necessary. For point-to-point link we are
>> not using anything, since it is not necessary: routing protocol are using
>> link-local for IPv6 routing.
> I'm currently debating whether to use public IPs for point-to-point (or
> inter-router ethernets). Apart from "documentation" purposes, is there any
> good reason not to just use link-local, and then use loopbacks for stuff that
> requires a router to use an IPv6 address (e.g. iBGP)?
The only issue we see, since we are using in our backbone link-local for
point-to-point: traceroute. You have to configure the source address ipv6
udp unreachable to be picked up deterministically e.g. from loopback.
(ipv6 unnumbered if - Cisco terminology).
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