unboundnsd/zones/168.192.in-addr.arpa.zone

$ORIGIN 168.192.in-addr.arpa.
$TTL 1800
@       SOA     nsd.      hostmaster.nsd. (
        2016091901
        3600
        900
        1209600
        1800
        )
        NS      nsd.
1.0     PTR     foo.local.