$TTL	1D
@	IN	SOA	localhost. root.localhost. (
				YYYYMMDDNN	; serial
				12H		; refresh
				1H		; retry
				1W		; expire
				1H		; ncache
			)
	IN	NS	localhost.
0.0.0	IN	PTR	localdomain.
1.0.0	IN	PTR	localhost.