Subject: RE: [DNSOP] Always registering the IP address of the name serversduring a delegation?

From: "Antoin Verschuren" <[email-masked]>
Date: Wed, 28 Nov 2007 09:37:52 +0100

[email-masked] wrote:
> 
> 	but its not example.orgs call if ns.isi.edu changed its ip
> 	address to 127.0.3.12... is it?  that would be the call of the
> admin for ns.isi.edu. 
> 
> 	and if there were no contact information on that nameserver in
> 	the form of a HOST record in the whois or comments (w/ glue) in
> 	the DNS, then debugging an apparent problem is going to be much
> 	harder.  one could ask if its a service that the .org registry
> 	is willing to offer on behalf of its clients and the Internet
> community, 

This mistake in direction of authority is made time after time when we're discussing glue.
We're all trying to see the DNS from top to bottom.
And we try to fit glue into that model.

Now when for delegations, the authority is indeed distributed from top to bottom:
Root->TLD->zone->host

For glue, the direction is diffent:
Host->zone->TLD->root

So if a host admin wants to change his glue, he has to contact his parent, in this case the zone admin.
So I aggree with Ed, It's the zone admin that deals with the TLD when the glue needs to be changed.
He's the "administrative" owner of the in zone glue record with the TLD because he accepted that task when he became te zone owner.

In the cases where the host is used out of zone, no glue is nessecary, so no incentive is needed from the host's parent.
Changing the host's NS set then is a simple bilateral agreement between host owner and zone owner. The TLD is not involved, and should not be administrating IP addresses for these hosts.

In cases where glue is nessecary, the zone admin has an incentive to contact his parent to change the glue, otherwise his zone doesn't work.
 
In the .nl registry system we only need glue for ns1.example.nl if it's in the NS set of example.nl.
The only one that can change the delegation of example.nl is that zone's owner.
Other ***.example.nl hosts which are not in the NS set of example.nl do not need glue.
Only if example.nl changes it's delegation, and a new ***.example.nl is added to the NS set, we ask for the IP and add glue.

Antoin Verschuren

Technical Policy Advisor
SIDN
Utrechtseweg 310
PO Box 5022
6802 EA Arnhem
The Netherlands

T +31 26 3525500
F +31 26 3525505
M +31 6 23368970
E [email-masked]
W http://www.sidn.nl/

_______________________________________________
DNSOP mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/dnsop