log file zebra.log ! hostname rt4 ! debug zebra kernel debug zebra packet ! interface lo ip address 4.4.4.4/32 ipv6 address ::ffff:0404:0404/128 ! interface eth-rt3 ip address 10.0.4.2/24 ! interface eth-rt5 ip address 10.0.5.1/24 ! ip forwarding ipv6 forwarding ! line vty !