Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 04-08-2006 Installation Manual page 650

Example 34.7 Reverse Lookup
$TTL 2D
1.168.192.in-addr.arpa. IN SOA gateway.world.cosmos. root.world.cosmos. (
1
2
3
Line 1:
$TTL defines the standard TTL that applies to all entries here.
Line 2:
The configuration file should activate reverse lookup for the network
192.168.1.0. Given that the zone is called 1.168.192.in-addr.arpa,
should not be added to the hostnames. Therefore, all hostnames are entered in their
complete form—with their domain and with a . at the end. The remaining entries
correspond to those described for the previous world.cosmos example.
Lines 3–7:
See the previous example for world.cosmos.
Line 9:
Again this line specifies the name server responsible for this zone. This time,
however, the name is entered in its complete form with the domain and a . at the
end.
Lines 11–13:
These are the pointer records hinting at the IP addresses on the respective hosts.
Only the last part of the IP address is entered at the beginning of the line, without
the . at the end. Appending the zone to this (without the .in-addr.arpa) results
in the complete IP address in reverse order.
Normally, zone transfers between different versions of BIND should be possible without
any problem.
650 Installation and Administration
2003072441 ; serial
1D ; refresh
2H ; retry
1W ; expiry
2D ) ; minimum
IN NS gateway.world.cosmos.
IN PTR gateway.world.cosmos.
IN PTR earth.world.cosmos.
IN PTR mars.world.cosmos.