2.2.1.1.2 Host ID

The Host ID attribute uniquely identifies the host on which the responder is running. All responders MUST include this attribute in all Hello frames.


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Type

Length

MAC_address

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Type (1 byte): This field MUST be set to 0x01.

Length (1 byte): This field MUST be set to 0x06.

MAC_address (6 bytes):  This field MUST be the MAC address of the host upon which the responder is running. On a host with multiple network interfaces, this field SHOULD be the lowest MAC address across the network interfaces.