v4.example.com.        IN A    192.0.2.1
v6.example.com.        IN AAAA 2001:db8::1
txt.example.com.       IN TXT  "no A or AAAA here"

ds.example.com.        IN A    192.0.2.2
ds.example.com.        IN AAAA 2001:db8::2

ds-rr.example.com.     IN A    192.0.2.3
ds-rr.example.com.     IN A    192.0.2.4
ds-rr.example.com.     IN AAAA 2001:db8::3
ds-rr.example.com.     IN AAAA 2001:db8::4

ns.example.com         IN NS   ds.example.com.
mx.example.com         IN MX   10 ds.example.com.
