When the value of tmnxOamMacPingCtlFlood is 'true', the
OAM ping request is transmitted that causes each upstream node
to add or delete the MAC address. If its value is 'false', the
operation is performed locally.
This object is optional and is not relevant when
tmnxOamPingCtlTestMode has a value other than 'macPopulate' or
'macPurge'.