speaking from RFC246[012] behavior point of view...
>To be clear (well, clearer): when I suggested using DHCP in order to
>locate DNS servers, I meant that entities that wish to locate an
>entity that functions in the server role of the DNS protocol when
>contacted at UDP port 53 might well do so by issuing DHCPv6
>Information-Request messages and listening for relevant responses.
>For the cases where the proposal you're talking about works at all,
>the two are semantically equivilent except for details of well-known
>port number, packet encoding, and the set of tricks used to propagate
>the queries and responses across routers.
this "Information-Request" behavior happens only when O bit is set in
router advertisement packet (see RFC2461 page 19). the problem
"stateless DNS discovery" draft is trying to address is, how to
discover DNS server when O bit is not set.
btw - it is still unclear to me if "administered (stateful) mechanism"
mentioned in RFC2461 is DHCPv6, or some other protocol.
it is not explicitly stated anywhere.
itojun
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