The value of vRtrPimNgAFGenERP specifies if multicast messages
are checked for embedded RP information. When vRtrPimNgAFGenERP
has a value of 'true', embedded RP is enabled and users can
configure group ranges where embedded RP information will be used.
When the value of vRtrPimNgAFGenERP is set to 'false',
embedded RP is disabled, administratively shutdown and
user configured group ranges (entries in vRtrPimNgERPGrpPrefixTable)
will be deleted.