Problem with subdomain delegation - NS RR ignored?

[Nick Tait]

Hi TG.

I just wanted to check:

 1. Your "hub" zone contains the NS delegation for "fish.hub." to
    "ns1.fish.hub." with glue record "4.4.4.4". Is 4.4.4.4 the correct
    IP address of the server you are delegating to?
 2. You haven't included the sub zone configuration (i.e. from 4.4.4.4)
    below. What do the zone stanza in the config file, and the zone file
    itself look like?
 3. What answer do you get if you try: *dig @4.4.4.4 **fish.hub soa
    +norecurse*

Nick.

On 10/05/23 16:07, binduser at thegeezer.net wrote:
> Howdy
>
> I'm struggling with subdomain creation, for some reason the delegation 
> glue records are being ignored - and i was wondering if someone could 
> help me identify what I've done wrong please.  I know i need to setup 
> another server for the subdomain, but I've been trying to get this 
> going at work and getting the same issue, so thought to try on my test 
> bed.  Can't even get the NS record returned for the subdomain
>
> Given the domain ".hub"  I can verify the domain level NS
> # host -t NS hub localhost
> > hub name server localhost.
>
> I can create an A record  for "salmon.hub."  and this resolves as 
> expected:
> # host -t a salmon.hub localhost
> > salmon.hub has address 8.8.8.8
>
> I want to delegate to a different domain server the subdomain 
> "fish.hub" and have created glue records as below in the config 
> snippet, but get NXDOMAIN for both the A record and the NS record
> # host -t a ns1.fish.hub localhost
> > Host ns1.fish.hub not found: 3(NXDOMAIN)
>
> # host -t NS fish.hub localhost
> > Host fish.hub not found: 3(NXDOMAIN)
>
> Any suggestions gratefully received.  Pertinent parts of named.conf 
> and zone file are shown below, if you need more info please don't 
> hesitate to ask
>
> thanks in advance!
>
> TG
>
> /etc/bind/named.conf
> acl "trusted" {
>         10.0.0.0/8;
>         192.168.0.0/16;
>         127.0.0.0/8;
>         ::1/128;
> };
> allow-recursion {
>                 trusted;
>        };
> forwarders {
>                 208.67.220.220;
>                 208.67.222.222;
>         };
> zone "hub" IN {
>                type master;
>                file "pri/hub.zone";
>                notify no;
>         };
>
> /etc/bind/pri/hub.zone
> $TTL 1W
> @       IN      SOA     hub. root.hub.  (
>                                       2008122601 ; Serial
>                                       28800      ; Refresh
>                                       14400      ; Retry
>                                       604800     ; Expire - 1 week
>                                       86400 )    ; Minimum
> @               IN      NS      localhost.
> @               IN      A       127.0.0.1
>
> @               IN      AAAA    ::1
>
> salmon.hub.     IN      A       8.8.8.8
> fish.hub.       IN      NS      ns1.fish.hub.
> ns1.fish.hub.   IN      A       4.4.4.4
>
>
>
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