The value of tRPOperPSFromCriteriaTag indicates the operational tag
to match on. It will only be valid when tRPOperPSFromCriteriaMatchTag
is enabled which indicates that route matching based on tags is
enabled.
A value of 0 for tRPOperPSFromCriteriaTag when
tRPOperPSFromCriteriaMatchTag is enabled indicates untagged routes are
matched.