The named.local file
specifies the PTR record for the local loopback interface
at the IP address 127.0.0.1.
The pointer record is needed for translating the loopback address
127.0.0.1 to localhost, for example by
gethostbyaddr(3N).
It is vital to the proper operation of every name server
that the 127.0.0.1 address should have a PTR
record pointing to localhost.
There should also be a corresponding
A record for localhost in the
named.hosts(4tcp)
file:
localhost IN A 127.0.0.1
Files
/etc/inet/named.d/db.local
suggested location for local loopback interface file