> >However, it would seem that several of the major vendors (e.g. Cisco,
> >Juniper) have interpreted this differently, and chosen not to perform
> >ND on point-to-point links.
>
> Do you mean perform, as in issue the NS request or also in not responding
> to a NS request from the peer?
I have no idea whether an NS request would be answered on a point-to-point
link for these vendors. When I have tested this in the lab, the observed
behavior is that an NS request is never issued.
> So I wonder, with all the IPv6 interoperability testing and certification
> going on, how come nobody ever noticed that this is an issue?
The ping-pong behavior on IPv6 point-to-point links has most certainly been
noticed, see for instance
http://tools.ietf.org/html/draft-ietf-ipngwg-p2p-pingpong-00
http://tools.ietf.org/html/draft-kohno-ipv6-prefixlen-p2p-00
http://www.janog.gr.jp/meeting/janog22/program/day2/data/day2-1-e.pdf
Steinar Haug, Nethelp consulting, sth...@nethelp.no
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