ip forwarding
interface r2-eth0
 ip address 10.2.1.2/24
!
ip route 10.1.1.0/24 10.2.1.3
interface r2-gre0
 ip address 10.255.255.2/32
 no link-detect
 ipv6 nd suppress-ra
!
interface r2-eth1
 ip address 192.168.2.2/24
!
ip route 192.168.4.4/24 10.255.255.4
ip route 192.168.1.1/24 10.255.255.1
