A (address) resource record
A records list the address for a given machine.
The ``name'' field is the machine name and the address is the
network address.
There should be one A record for each address of the machine.
Here is an
example of an address record for a machine named
volga with two network addresses:
{name} {ttl} addr-class A address volga IN A 132.147.118.1 IN A 132.147.246.1