Re: draft-ietf-dhc-dhcp-dns-02.txt

[Yakov Rekhter <[e-mail]>]

Deke,

> I'm trying to convince myself one way or the other that there is
> provision for a DHCP client to specify a client FQDN option in the DHCP
> transaction which is for a DNS zone other than the zone usually
> associated with the address assigned by the DHCP server itself, and
> that under the right circumstances that request can be honored.
> 
> For example, can I visit MIT and boot up my laptop using DHCP (talking
> to some MIT DHCP server) to acquire the address but then specify a 
> upenn.edu FQDN?

Yes, you should be able to do this. However, if you would assume that
the DHCP server (at MIT) would be responsible for updating not just
the PTR RR (associated with the address), but your A RR
(that is at upenn.edu), then you need to figure out a whole bunch
of security/authentication-related issues. IMHO you'll be much
better off if the DHCP server at MIT would just update the PTR RR,
and the client (your laptop) would be responsible for updating
its A RR.

Yakov.