Delegation of in-addr.arpa.

[Igor Shabaltas]

Hi, Folks

1)  In addition setup HP also as secondary server for all your subdomains
(forward & reverse zones)
2)  Setup HP as primary for the zone 98.10.in-addr.arpa. and put only NS RRs
for your subdomains there.
3) Also in named.conf you can use 'forward only' option in zone statements
for 60.98.10.in-addr.arpa. & 61.98.10.in-addr.arpa.  with  "forwarders
 10.98.6x.x; };" list pointed to appropriate server.
---
Igor Shabaltas

> Hello Admins,
>
> We have an internal DNS server running on HP (v4.9.7) which is also a
primary
> root server. We also need to resolve external hosts
> so we have a forwarders option which is pointing to our gateway server
(which
> doesn't know about internal hosts). The setup is working OK until ...
>
> We delegated a subdomain (lev1.myinternal.com) to a linux server with
address
> space 10.98.60.x. This linux server, in turn has delegated
> a sub domain (lev2.lev1.myinternal.com) to an NT server running WINS and
DNS
> with address space 10.98.61.x
>
> Our db.myinternal entries are (for delegation) :
>
> lev1 86400 IN NS linux.lev1.myinternal.com.
> linux.lev1.myinternal.com. 86400 IN A 10.98.60.11
> lev2.lev1 86400 IN NS nt.lev2.lev1.myinternal.com.
> nt.lev2.lev1.myinternal.com. 86400 IN A 10.98.61.12
>
> Our db.in-addr.10 entries for delegation are:
>
> 60.98.10.in-addr.arpa. IN NS linux.lev1.myinternal.com.
> 61.98.10.in-addr.arpa. IN NS nt.lev2.lev1.myinternal.com.
>
> With this setup, my forward name resolution works fine with HP connecting
> directly to linux (or NT) if query is for a host in any sub-domain.
> However, when I perform a reverse lookup for one of the addresses in the
> sub-domains, I see in the debug log that HP connects to the gateway
> (which doesn't know about internal hosts and IPs) instead of connecting to
linux
>  or NT (as the case maybe). I also found that if I remove forwarding
> option, the queries work fine bothways. But we need to retain the
forwarding
> functionality to resolve external hostnames.
>
> What do I need to change to make my setup work? I can provide more details
if
> required. I was thinking of making HP secondary for its own sub-domains
> (both forward and reverse) but NT has WINS as well and DNS+WINS don't mix
well
> with HP.
>
> Thanks in advance
> ...Manjeet