The value of vRtrRsvpNbrFlags indicates the set of properties for
this RSVP neighbor. The bits are defined as follows :
localRefreshReduction - If set, implies that refresh reduction is
configured locally for this neighbor.
localReliableDelivery - If set, implies that reliable delivery is
configured locally for this neighbor.
remoteRefreshReduction - If set, implies that the refresh reduction
is supported on the remote end.
remoteMessageId - If set, implies that message ID object is
supported on the remote end.