Using FDAD to Prevent DAD Attack in SEcure Neighbor Discovery Protocol

Table 1

Descriptions of each field.

Field		Description
QType		8 bits; 0, query message; 1, reply message; 2, feedback message
QLen		8 bits, the length of the message, and unit is bytes
Reserved		16 bits, reserved, all is zero
MAC		48 bits, the queried MAC address, all zero in reply message indicate MAC not exist
Datapath_Id		64 bits, the ID of OpenFlow switch which MAC table contains the queried MAC
Port_No.		32 bits, the port number corresponding to queried MAC
Create_time		64 bits, creation time of the queried MAC