1  1  1  1  1  1
     0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+  \
   |           MESSAGE ID (MUST BE ZERO)           |   \
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |QR| OPCODE(6) |         Z          |   RCODE   |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |             QDCOUNT (MUST BE ZERO)            |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+     > HEADER
   |             ANCOUNT (MUST BE ZERO)            |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |             NSCOUNT (MUST BE ZERO)            |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |             ARCOUNT (MUST BE ZERO)            |   /
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+  /
   |            DSO-TYPE = PUSH (0x0041)           |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
   |   DSO-LENGTH (number of octets in DSO-DATA)   |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+  \
   \                     NAME                      \   \
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |                     TYPE                      |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |                     CLASS                     |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |                      TTL                      |    |
   |     (32-bit unsigned big-endian integer)      |     > DSO-DATA
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   |  RDLEN (16-bit unsigned big-endian integer)   |    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   \           RDATA (sized as necessary)          \    |
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+    |
   :     NAME, TYPE, CLASS, TTL, RDLEN, RDATA      :    |
   :             Repeated As Necessary             :   /
   +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+  /