Gives finer control of the next-hop-self configuration provided by bgpPeergrNxtHopSlf. If the bgpPeerAfiSafiUsePeerNxtHopSlf bit is set in the bgpPeergrAfiSafiConfigUsage field then this value is ignored and the peer group configuration is used instead. If the value of this object is changed while a peer session is active, BGP will check for any routes that need to be advertised or withdrawn as a result of the change.