@ IN SOA server.myhome.net. root.server.myhome.net. ( 1997022700 ; Serial 28800 ; Refresh 14400 ; Retry 3600000 ; Expire 86400 ) ; Minimum IN NS server.myhome.net. 1 IN PTR router.myhome.net. 2 IN PTR gateway.myhome.net.