router bgp 65500
 bgp router-id 13.13.13.13
 no bgp network import-check
 neighbor 192:168::255:1 remote-as 65500
 address-family ipv4 unicast
  no neighbor 192:168::255:1 activate
 exit-address-family
 address-family ipv6 unicast
  neighbor 192:168::255:1 activate
  network 172:31::0:13/128
 exit-address-family
!