$ORIGIN .
$TTL 604800	; 1 week
sio1lab.lan		IN SOA	dns1.sio1lab.lan. root.sio1lab.lan. (
				2          ; serial
				604800     ; refresh (1 week)
				86400      ; retry (1 day)
				2419200    ; expire (4 weeks)
				604800     ; minimum (1 week)
				)
			NS	deb-dns-jp.sio1lab.lan.
			NS	deb-dns2-jp.sio1lab.lan.
			A	192.168.0.140
			A	192.168.0.141
$ORIGIN sio1lab.lan.
deb-dhcp-jp		A	192.168.0.141
deb-dns-jp		A	192.168.0.140
deb-dns2-jp		A	192.168.0.142
dhcp			CNAME	deb-dhcp-jp
dns1			CNAME	deb-dns-jp
dns2			CNAME	deb-dns2-jp