interface r1-eth0
 ip address 10.1.1.1/24
!
ip route 10.2.1.0/24 10.1.1.3
interface r1-gre0
 ip address 10.255.255.1/32
 no link-detect
 ipv6 nd suppress-ra
exit
interface r1-eth1
 ip address 192.168.1.1/24
!