1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+---------------+---------------+---------------+---------------+
|    Version    |  PacketType   |         PacketLength          |
+---------------+---------------+---------------+---------------+
|    HopLimit   |   ReturnCode  | Reserved(MBZ) | HeaderLength  |
+===============+===============+===============+===============+
/                    Request header block TLV                   /
+---------------+---------------+---------------+---------------+
/                      Report block TLV 1                       /
+---------------+---------------+---------------+---------------+
/                      Report block TLV 2                       /
+---------------+---------------+---------------+---------------+
/                               .                               /
/                               .                               /
+---------------+---------------+---------------+---------------+
/                      Report block TLV n                       /
+===============+===============+===============+===============+
|      Type (=T_DISCOVERY)      |         MessageLength         |
+---------------+---------------+---------------+---------------+
|            T_NAME             |             Length            |
+---------------+---------------+---------------+---------------+
/   Name segment TLVs (name prefix specified by CCNinfo user)   /
+---------------+---------------+---------------+---------------+
/                       Request block TLV                       /
+---------------+---------------+---------------+---------------+
/ Optional CCNx ValidationAlgorithm TLV                         /
+---------------+---------------+---------------+---------------+
/ Optional CCNx ValidationPayload TLV (ValidationAlg required)  /
+---------------+---------------+---------------+---------------+