same link-local address on multiple interface and OSPFv3

Brian E Carpenter brian.e.carpenter at gmail.com
Fri Jun 28 22:07:57 CEST 2013


On 29/06/2013 00:41, Mikael Abrahamsson wrote:
> On Fri, 28 Jun 2013, Matjaž Straus Istenič wrote:
> 
>> Workaround is rather simple: use different link-local addresses on
>> IPv6-enabled interfaces and you are safe. But, nevertheless, I think
>> using same link-local pairs on links should not get you into any
>> trouble, right?
> 
> Correct, the same way that configuring fe80::1 on one interface and
> fe80::2 on a second interface, and on this second interface the other
> end should be able to have fe80::1 as its address, and everything should
> work fine. Everything else is buggy, as you already have concluded.

Dumb question: would the same product fail if you configured 10.1.1.1
on two different IPv4 interfaces? (If yes, it tells you there is some
sloppy basic design.) (And yes, I realise that the two OSPFs might have
completely independent code bases.)

   Brian

   Brian



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