frr version 8.4_git
frr defaults traditional
hostname R3
!
ip route 100.64.0.0/24 blackhole
!
interface eth1
 description "Link to R2"
 ipv6 address 2001:db8:0:3::2/64
exit
!
interface eth2
 description "Link to C2"
 ip address 100.64.0.1/30
exit
!
router bgp 65503
 no bgp ebgp-requires-policy
 neighbor 2001:db8:0:3::1 remote-as 65502
 neighbor 2001:db8:0:3::1 capability extended-nexthop
 !
 address-family ipv4 unicast
  network 100.64.0.0/24
 exit-address-family
 !
 address-family ipv6 unicast
  neighbor 2001:db8:0:3::1 activate
 exit-address-family
exit
!