Aliases for a delegated subnet?

[Jim McConnell]

Hello;

I recently received notification from UUNET that they had, at our request,
delegated the reverse zone for the block 63.91.79.32 to us.  So, being a
good BIND admin, I set out to properly configure this zone, with the
following:

snippet from named.conf:

zone "32.79.91.63.in-addr.arpa." in {
    type master;
    file "master/public/db.63.91.79.32";
};

The SOA record (db.soa):

$TTL    86400
@       IN      SOA     ns1.tbred.com.  hostmaster.tbred.com. (
                        2000032810; Serial Number
                        10800     ;     Refresh         = 3 hours
                        3600      ;     Retry           = 1 hour
                        604800    ;     Expire          = 7 days
                        86400 )   ;     Minimum TTL     = 1 day
        IN      NS      ns1.tbred.com.
        IN      NS      ns2.tbred.com.
;

and, the zone file itself:

$INCLUDE                db.soa
;
35              IN              PTR             www.texascountrymall.com.
36              IN              PTR             gw.tsi-tx.com.


This all seems perfectly reasonable, and is working.  However, in my
experience, working does not always equal correct.  My questions are:

Is it proper to see an alias for '63.91.79.35' to
'35.79.91.63.in-addr.arpa'?
Does it even matter?
Have I badly configured this zone?

[root at ns1 public]# nslookup www.texascountrymall.com
Server:  ns1.tbred.com
Address:  198.190.167.16

Name:    www.texascountrymall.com
Address:  63.91.79.35

[root at ns1 public]# nslookup 63.91.79.35
Server:  ns1.tbred.com
Address:  198.190.167.16

Name:    www.texascountrymall.com
Address:  63.91.79.35
Aliases:  35.79.91.63.in-addr.arpa

Thanks in advance for any help offered...

Jim McConnell

--
James K. McConnell (jkm at tbred.com)
Network Administrator
Phone: (732) 560-1377 x7732
Fax: (732) 560-1594


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