The set of ports which are currently assigned to the
bonding group of specified group name.
Byte 1: Reserved(chassis)
Byte 2~3: Reserved(slot)
Byte 4: Reserved
Byte 5: Each bit in the octet specifies a port from MSB to LSB.
for example: 32(hex) = 50(dec) = 00110010(bin) means the
port 3, 4 and 7.
Byte 6~10:Reserved