no ip forwarding
no ipv6 forwarding

int lo
  ip address 10.1.1.2/32
  ipv6 address 10:1::1:2/128

int eth0
  ip address 10.1.2.2/24
  ipv6 address 10:1::2:2/120

int eth1
  ip address 10.1.3.2/24
  ipv6 address 10:1::3:2/120

ip route 10.1.1.1/32 10.1.2.1
ip route 10.1.1.3/32 10.1.3.3
ipv6 route 10:1::1:1/128 10:1::2:1
ipv6 route 10:1::1:3/128 10:1::3:3