ttl 20d
tsig-key "/etc/bind/rndc.key"

subnet 192.168.1.0 netmask 255.255.255.0
    dns-update

    domain net1.example.com

    option routers 192.168.1.1
    option netbios-name-servers 192.168.1.1
    option netbios-node-type 2

    ttl 20m
    max-ttl 40m

    192.168.1.4    pc4     pc-4
    192.168.1.5    ab:dd:ee:ff:ff:ee   pc-5.subnet2

    ttl 3d
    default  <host>-<addr>.unreg.


bind-server 127.0.0.1

subnet 192.168.2.0 netmask 255.255.255.0
#empty subnet

subnet 192.168.3.0 netmask 255.255.255.0
    ttl 3h
    default <addr>