nanog mailing list archives

Re: JUNOS forwards IPv6 link-local packets


From: Jack Bates <jbates () brightok net>
Date: Fri, 27 Apr 2012 11:31:32 -0500

On 4/27/2012 11:20 AM, Chris Adams wrote:
Once upon a time, Jack Bates<jbates () brightok net>  said:
fe80::/65 discard
fe80:0:0:0:8000::/65 discard

More specifics rule out over connected any day.
That would also kill any legitimate link-local traffic though.

Perhaps. I'm actually curious on that, as the rules for routing to link-local are very specialized. It might flag on uRPF for local traffic, but that can be overcome with a fail filter. Sending out from the RE could likely ignore the route, as it has to send to specific interfaces. Receiving on interfaces that don't have uRPF should still work as well.

It's a theory and would have to be tested.

Jack


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