The value of tmnxOamPingCtlRemoteSdp specifies the encapsulation of the
ping reply to be sent by the far end node.
When tmnxOamPingCtlRemoteSdp is 'false', the far-end node sends the
reply using the generic IP/GRE OAM encapsulation.
When tmnxOamPingCtlRemoteSdp is 'true', the far-end node sends the
reply using the same service tunnel encapsulation labeling used for the
associated service traffic. If that labeling cannot be found, the
generic IP/GRE OAM encapsulation is used.
This object is optional and is applicable only when
tmnxOamPingCtlTestMode is equal to 'svcPing'.