2.2.3.2.2.1 DNS ADDR

The DNS ADDR structure is an IPv4 or IPv6 address used by DNS_ADDR MaxSa field (section 2.2.3.2.2).

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Address Family																Port Number
IPv4 Address
IPv6 Address (16 bytes)
...
...
Padding
...

Address Family (2 bytes): This MUST be set to 0x0002 if this is an IPv4 address or 0x0017 if this is an IPv6 address.

Port Number (2 bytes): Senders MUST set this to zero, and receivers MUST ignore it.

IPv4 Address (4 bytes): An IPv4 address in network byte order value for the host pointed to by DNS_ADDR structure.

IPv6 Address (16 bytes): An IPv6 address in network byte order value for the host pointed to by DNS_ADDR structure.

Padding (8 bytes): Senders MUST set this to zero, and receivers MUST ignore it.