router bgp <BGP_ASN>
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 bgp graceful-restart restart-time 30
 redistribute kernel
 timers bgp 4 12
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> remote-as <BGP_REMOTE_AS_SUBSCRIBER_PEER>
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> fall-over bfd
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> activate
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> next-hop-self
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> soft-reconfiguration inbound
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> prefix-list ipv4-subscriber-only in
 neighbor <BGP_NEIGHBOUR_SUBSCRIBER_PEER> prefix-list default-only out
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> remote-as <BGP_REMOTE_AS_INTERNET_PEER>
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> fall-over bfd
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> activate
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> soft-reconfiguration inbound
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> prefix-list default-only in
 neighbor <BGP_NEIGHBOUR_INTERNET_PEER> prefix-list ipv4-cgnat-only out
!
!
ip prefix-list default-only seq 5 permit 0.0.0.0/0
ip prefix-list ipv4-cgnat-only seq 5 permit <CGNAT_V4_CIDR>
ip prefix-list ipv4-subscriber-only seq 5 permit <SUBSCRIBER_V4_CIDR>
!