$TTL 3h
@ SOA ns root.gate.isp.un. 44 1d 12h 1w 3h

                NS      ns

ns              A       172.16.1.254
isp             A       172.16.1.254
ns.isp          A       172.16.1.254

gate.isp        A       172.16.1.254
mail.isp        A       172.16.1.254
;openvas.isp     A       172.16.1.252

;for lin1, asterisk1
;$GENERATE 1-55 server.corp$ A 172.16.1.$

;for lin2, asterisk2
;$GENERATE 1-55 ns$ A 172.16.1.$
;$GENERATE 1-55 ns$ A 192.168.$.10
;$GENERATE 1-55 corp$ NS ns$

;for lin5
;$GENERATE 1-9 router$.isp A 172.16.1.19$

;for lin7, lin3
;$GENERATE 1-55 server.corp$ A 192.168.$.10
;$GENERATE 1-55 www.corp$ A 192.168.$.20
;$GENERATE 1-55 gate.corp$ A 192.168.$.1
;$GENERATE 1-55 router.corp$ A 192.168.$.1
;$GENERATE 1-55 switch.corp$ A 192.168.$.3
;$GENERATE 1-55 switch1.corp$ A 192.168.$.3
;$GENERATE 1-55 switch2.corp$ A 192.168.$.4
;$GENERATE 1-55 switch3.corp$ A 192.168.$.5
;$GENERATE 1-9 lan.corp$ A 192.168.10$.10
;$GENERATE 10-55 lan.corp$ A 192.168.1$.10
;$GENERATE 10-55 corp$ A 192.168.$.10