$ORIGIN .
$TTL 604800	; 1 week
0.168.192.in-addr.arpa	IN SOA	dns1-yl.sio-yl.lan. root.dns1-yl.sio-yl.lan. (
				2          ; serial
				604800     ; refresh (1 week)
				86400      ; retry (1 day)
				2419200    ; expire (4 weeks)
				604800     ; minimum (1 week)
				)
			NS	dns1-yl.sio.lan.
$ORIGIN 0.168.192.in-addr.arpa.
120			PTR	deb-dhcp-yl.sio-yl.lan.
121			PTR	dns1-yl.sio-yl.lan.
122			PTR	dns2-yl.sio-yl.lan.