+---------------------+
                  |                     |
                  | Router 203.0.113.1  |
                  |                     |
                  +----------+----------+
                             |eth1
                             |2001:db8:0:1::1/64
                             |
                             |
                             |2001:db8:0:1::2/64
                  +----------+----------+
                  |                     |         |
                  |   Another Router    +---------| 2001:db8:0:2::/64
                  |                     |         |
                  +---------------------+