$ORIGIN example.com.
$TTL 3600

@	SOA	dns1 hostmaster 0 10800 3600 1209600 7200
	NS	dns1
	NS	dns2
	MX	10 mail

dns1	A	192.0.2.1
	AAAA	2001:DB80::1

dns2	A	192.0.2.4
	AAAA	2001:DB80::2

mail	A	192.0.2.3

added	A	192.0.2.5

added2	A	192.0.2.5
	AAAA	2001:DB80::5