; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA ukw.6pack.org. root ( 1 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS client2 4.4.3.7.9.3.e.f.f.f.5.c.5.1.2.0.2 PTR client1.ukw.6pack.org. 3.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4 PTR client2.ukw.6pack.org.