example.com.        	3600	SOA	dns1.example.com. hostmaster.example.com. 2010111227 21600 3600 604800 86400
example.com.        	3600	NS	dns1.example.com.
example.com.        	3600	MX	10 mail.example.com.
dns1.example.com.   	3600	A	192.0.2.1
dns1.example.com.   	3600	AAAA	2001:db8::1
foo.example.com.    	3600	A	192.0.2.4
mail.example.com.   	3600	A	192.0.2.3
mail.example.com.   	3600	AAAA	2001:db8::3
d1.example.com.		3600	AAAA	1::4