A value of 'true' indicates that MEPID of the target MEP is used for
SOAM DM frame transmission.
A value of 'false' indicates that the destination MAC address of the
target MEP is used for SOAM DM frame transmission.
This object is only valid for the entity transmitting the Delay
Measurement frames, types 'dmDmm' and 'dm1DmTx'. It is not applicable
for the 'dm1DmRx type.
This object can only be written at row creation time and cannot be
modified once it has been created.