nameserver registration

[Jorg W.]

2011/6/19 David Miller <dmiller at tiggee.com>:
>
> In the particular case of the OP - example.net. has name servers under
> example.com.
>
> To make lookups for records under example.net., resolvers walk the tree from
> "." to "net." and get NS records - ns1.example.com. and ns2.example.com.
>
> You can't insert glue records into net. for name servers that exist under
> com., so now resolvers walk the tree from "." to "com." to get the name
> servers for example.com. which in the OP's case are - GoDaddy name servers.
>
> If there are no glue records in com. for ns1.example.com. and
> ns2.example.com., then resolvers will just ask the authoritative name
> servers for example.com. (which in the OP's case are - GoDaddy name servers)
> for the A/AAAA records for ns1.example.com. and ns2.example.com.  If the
> GoDaddy name servers provide A/AAAA records for ns1.example.com. and
> ns2.example.com., then resolution works and everyone is happy.
>
> Glue is only required if that is the only way to traverse the tree to get to
> the IP addresses for the name servers for a domain.
>


Thanks, that's what I wanted to know.