This value of tMirrorDestSapEgrIpMirrorSA specifies the MAC address to
be used for the Source MAC Address field in the mirrored packets when
using IP mirror service.
This MAC address must not be a broadcast or multicast address.
An 'inconsistentValue' error is returned if an attempt is made to set
the value of tMirrorDestSapEgrIpMirrorSA to other than default
when tMirrorDestinationEncapsulation is not set to 'ipOnly (11)'.