router bgp 111
 bgp router-id 10.100.0.11
 no bgp ebgp-requires-policy
 no bgp network import-check
 neighbor 50.0.1.1 remote-as 101
 neighbor 50:0:1::1 remote-as 101
 !
 address-family ipv4 unicast
  network 100.0.0.21/32
  no neighbor 50:0:1::1 activate
 exit-address-family
 !
 address-family ipv6 unicast
  network 100::21/128
  neighbor 50:0:1::1 activate
 exit-address-family


