The value of tSapIngressMacCritOuterTagValue specifies the value to
match against the VID of the first VLAN tag in the packet that
is carried transparently through the service (the first vlan tag after
the service delimiting tags).
This object can only be set if tSapIngressMacCritType is set to 'vid(3)'.
The (default) value of '-1' indicates no outer VLAN tag matching will
be performed.