question regarding "glue domains"

John MacKenzie john at
Sat Feb 4 03:19:03 UTC 2006

So with whom should I request a glue domain?

- John

-----Original Message-----
From: bind-users-bounce at [mailto:bind-users-bounce at] On
Behalf Of Barry Margolin
Sent: Friday, February 03, 2006 10:04 PM
To: comp-protocols-dns-bind at
Subject: Re: question regarding "glue domains"

In article <ds0rfa$2a8a$1 at>,
 "John MacKenzie" <john at> wrote:

> Hi there,
> I have my domains registered through 1and1 , and curently have my dns 
> hosted with valueweb.
> I had valueweb create a record for ns1.mydomain about 30 hours ago, 
> and i can ping it from my home machine.
> however when I try to change my primary to ns1.mydomain with 1and1, I 
> am told :
> Subdomains of the original domainname as name servers for the original

> domainname need a fixed IP! Please refer to the FAQ (keyword: Glue 
> domain)!
> Surely this is what i accomplished by having valueweb create th entry 
> on their primary?

No, the glue record has to be in the PARENT zone.  What if valueweb's 
server were down, how would someone get the address of ns1.mydomain?

> Is it possibly due to the address not propagating fully yet?

DNS information doesn't really "propagate".  It just sits on 
authoritative servers, waiting for other servers to look it up when they

need it.

> also, I read somewhere that the reverse ip lookup MUST say 
> ns1.mydomain
> is this true?

No.  DNS requires that forward_lookup(reverse_lookup(address) == 
address, but doesn't require that reverse_lookup(forward_lookup(name)) 
== name.

Barry Margolin, barmar at
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***

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