The value of tSapIngressMacCritInnerTagMask is applied as a mask to VID
of the inner VLAN tag of the packet prior to comparing it
with tSapIngressMacCritInnerTagValue. The inner tag is the second tag
in the packet that is carried transparently through the
service (the second tag after the service delimiting tags).
This object can only be set if tSapIngressMacCritType is set
to 'vid(3)'.