Dynamic Host DNS Registration

[Stefan Puiu]

On 7/8/05, Auer, Karl James <karl.auer at id.ethz.ch> wrote:
> > The DHCP specification discusses the communication between the DHCP=3D2=
0
> > client and server.  I don't think it says anything about DHCP servers=
=3D20
> > updating DNS servers.  That's something many DHCP servers do,=3D20
> > but it's an add-on for integration, not part of the DHCP protocol.
>=20
> There are separate standards (still developing, I believe) covering
> exactly *how* to update DNS entries dynamically, don't have the numbers
> to hand.=20

Slightly offtopic for this list, but anyway:=20

The FQDN assignment (in the DHCP protocol) is done using DHCP Option
81 (client FQDN) AFAIR; it's specified in the draft mentioned below.

On the other hand, the DHCP-DNS interaction is specified in an ietf draft:=
=20
http://www.ietf.org/proceedings/00jul/I-D/dhc-dhcp-dns-12.txt

However, I'm not sure who implements that DHC ID RR yet - I don't
think BIND does yet.

So, in order to support dynamic DNS updates, that router would have to
support option 81, too. DHCP servers are supposed to support a minimum
subset of options, but AFAIR this one isn't one of them.