nanog mailing list archives

Re: Waste will kill ipv6 too


From: Mark Andrews <marka () isc org>
Date: Fri, 29 Dec 2017 16:34:00 +1100


On 29 Dec 2017, at 4:21 pm, Valdis.Kletnieks () vt edu wrote:

On Fri, 29 Dec 2017 15:36:51 +1100, Mark Andrews said:
PD is designed so that a device (router) can request multiple PD requests
upstream. The interior router just needs to make a upstream request on behalf
of the downstream device and any prefixes it will be allocating itself.

OK, I obviously missed that part of the RFC, I was under the impression that a
"middle" router would be carving out of its own PD, rather than relaying the
downstream request upstream.

Mostly this is because RFC describe what goes over the wire, not what happens internally to a node.  There isn’t a RFC 
that says populate the DHCP DNS servers advertised downstream with those learnt by DHCP from upstream but CPE routers 
do this all the time. You could also just turn on DHCPv6 relay when you detect you are a interior router or have a 
check box next to the enable DHCP checkbox which says use relay mode.

Device vendors need more and more spoon feeding these days.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka () isc org


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