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2.2.2.7 ACK

2.2.2.7 ACK

The ACK message is sent from one node to another to acknowledge receipt of a REQUEST or FLOOD message.

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FieldID1

Length1

Acked Message ID

FieldID2 (optional)

Length2 (optional)

Reserved (optional)

N

FieldID1 (2 bytes): MUST be set to 0x0018 (PNRP_HEADER_ACKED).

Length1 (2 bytes): MUST be set to 0x0008.

Acked Message ID (4 bytes): The value of the Message ID field in the PNRP Header of the message to which this is a response.

FieldID2 (2 bytes): If present, MUST be set to 0x0040 (FLAGS_FIELD).

Length2 (2 bytes): If present, MUST be set to 0x0006.

Reserved (15 bits): If present, MUST be set to zero when sent and MUST be ignored on receipt.

N (1 bit): Not Found. If present, indicates that there is no PNRP ID registered on the sender that corresponds to the Validate PNRP ID field in the FLOOD message to which this ACK is a response.

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