The vRtrNextVRtrID object is used to assign values to vRtrID
to be used to create a new row in the vRtrConfTable as described
in 'Textual Conventions for SNMPv2'. The network manager reads
the object, and then writes the value back in the SET request
that creates a new instance of vRtrConfEntry. If the SET fails
with the code 'inconsistentValue', then the process must be
repeated. If the the SET succeeds, then the object is
incremented and the new instance is created according to the
manager's directions.