Re: ping-pong phenomenon with p2p links & /127 prefixes

[Jeroen Massar <jeroen@unfix.org>]

On 2010-08-16 11:41, sthaug@nethelp.no wrote:
>> Thus, do ask Cisco and Juniper and other vendors where this now 'works'
>> if this intentional, or if they might finally comply to the IPv6
>> specifications one day, as then you might better watch out for this as
>> it will break your network. For the vendors that have it, it might maybe
>> be an idea to have a 'disable subnetanycast' command or similar so that
>> one can explicitly mark a prefix that way.
> 
> I have no plans to ask Cisco and Juniper about this. I want /127 to
> continue working, and couldn't care less about subnet anycast for my
> core routers.

I think you miss my point: they might finally comply with the specs one
day (if you ask or not, others might) and you will have forgotten about
this little subtle problem and upgrade your routers and voila your
network is broken.

If I where you, or anybody else who is using this 'feature' I would be
wary of it and make a big big note for the test-lab to test this before
shoving new versions to the live network.

Greets,
 Jeroen