Re: JUNOS forwards IPv6 link-local packets

[Owen DeLong <owen () delong com>]

We kind of needed them in IPv4, though not universally.

At least in IPv6, we have them.

Owen

On Apr 27, 2012, at 12:16 PM, Christopher Morrow wrote:

> you know what I love? address selection rules, or rather the fact that
> we have to have them in this new ip protocol :(
>
> bugs and code problems and operational headaches and filters and ... :(
>
> On Fri, Apr 27, 2012 at 12:31 PM, Jack Bates <jbates () brightok net> wrote:
> > 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