The value of the object sapIntendedIngressMacFilterId
indicates the index in the tMacFilterTable corresponding
to the ingress Mac filter that should be applied
on this SAP.
If it deviates from sapCurrentIngressMacFilterId, this
means that there was a problem when trying to activate
this filter. It can only deviate when using ToD Suites for
the SAP. When the ToD Suites decides that a new filter
must be applied, it will try to do this. If it fails,
the current and intended field are not equal.