向BGP 对等体发布路由，将自身地址作为下一跳的配置为
Aneighbor x.x.x.x next-hop-self
Bpeerx.x.x.x next-hop-self
Cneighborx.x.x.x next-hop-local
Dpeer x.x.x.x next-hop-local
Aneighbor x.x.x.x next-hop-self
Bpeerx.x.x.x next-hop-self
Cneighborx.x.x.x next-hop-local
Dpeer x.x.x.x next-hop-local