!
hostname r4
log file zebra.log
!
interface lo
 ip address 192.168.100.1/32
 ipv6 address fc00:100::1/128
!
interface r4-eth0
 description SW5 Stub Network
 ip address 192.168.102.1/24
 ipv6 address fc00:100:0:2::1/64
!
interface r4-eth1
 description SW0 R1-R2 OSPF & BGP Network
 ip address 192.168.101.2/24
 ipv6 address fc00:100:0:1::2/64
!