This attribute indicates whether or not both ends of the IMA group
are using the same transmit clocking mode (itc/ctc). Its value will be
yes if both ends are not using the same transmit clocking mode. A
clocking mode mismatch does not prevent an IMA group from
coming up and can be corrected by using the same clocking mode at
both ends.
This attribute will always have a value of no if the protocol for the
IMA group is proprietary.