ack
On 8/2/11 9:11 PM, "Mark Andrews" <ma...@isc.org> wrote: > >In message <ca5e14c5.158338%john_brzozow...@cable.comcast.com>, >"Brzozowski, Jo >hn" writes: >> >> On 8/2/11 7:37 PM, "Mark Andrews" <ma...@isc.org> wrote: >> >> > >> >In message <ca5dea74.158185%john_brzozow...@cable.comcast.com>, >> >"Brzozowski, Jo >> >hn" writes: >> >> This is something that should be today as part of broadband IPv6 >> >> deployments to prevent conflict at the service provider edge. I >>cannot >> >> think of a good reason why I would want to accept IPv6 router >> >> advertisements, at this time from residential gateways. >> > >> >If they advertise the /64's of the /56 they are using you can filter >> >the unrequested traffic and also prevent looping packets when they >> >send the rest of the /56 back to you. If we don't do something >> >like this the border CPE router has to have a null route covering >> >the /56 (or whatever upstream has delegated to it) which would be >> >a good thing to do regardless. >> > >> >Seeing the /64's also gives you a insight into whether you can >> >allocate on the /60 boundary or not. Similarly if you need to >> >start planning for /52's rather than /56's. >> [jjmb] I don=B9t get it. If I (the provider) delegated a /56 I already >>know >> that I delegated the same to the end user. I have no need to receive >>any >> router advertisements from the WAN interface of the end users gateway. >>In >> the case I am referring to DHCPv6 is used to dynamically delegate an >>IPv6 >> prefix of some length plus a globally routable /128 for the WAN >>interface. > >I mis-interpreted the message I replied to, i.e. RA's vs routes. > >> >Mark >> > >> >> John >> >> = >> >> >> On 8/2/11 1:47 AM, "Michael Newbery" <newb...@gmail.com> wrote: >> >> = >> >> >> >It's outside the CPE spec, but I can see that the document could >>state, >> >> >as an assumption, that the ISP will filter routing advertisements >>from >> >> >the CPE and will only pass those that it has determined (via some >> >> >external mechanism, undefined in this document) belong to the CPE. >> >> = >> >> >> _______________________________________________ >> >> homenet mailing list >> >> homenet@ietf.org >> >> https://www.ietf.org/mailman/listinfo/homenet >> >-- = >> >> >Mark Andrews, ISC >> >1 Seymour St., Dundas Valley, NSW 2117, Australia >> >PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org >> >> _______________________________________________ >> homenet mailing list >> homenet@ietf.org >> https://www.ietf.org/mailman/listinfo/homenet >-- >Mark Andrews, ISC >1 Seymour St., Dundas Valley, NSW 2117, Australia >PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ homenet mailing list homenet@ietf.org https://www.ietf.org/mailman/listinfo/homenet
