Machine A= XXXX:YYYY:ZZZZ:**9901**::AE40  (A is software router)

Machine B= XXXX:YYYY:ZZZZ:**9901**::BDBD (eth0)  & XXXX:YYYY:ZZZZ:**9901**::B015(tun0)  (6to4 tunnel)

Machine C= XXXX:YYYY:ZZZZ:**7CFF**::E205 (eth0)  & XXXX:YYYY:ZZZZ:**7CFF**::E555(tun0)  (6to4 tunnel)

Machine D= XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:ddd (Server which we want to access)

XXXX:YYYY:ZZZZ:**7cff**::/64 via XXXX:YYYY:ZZZZ:**9901**::bdbd dev eth1  metric 1024
XXXX:YYYY:ZZZZ:**9901**::/64 dev eth1  proto kernel  metric 256
fe80::/64 dev eth0  proto kernel  metric 256
fe80::/64 dev eth1  proto kernel  metric 256

default via XXXX:YYYY:ZZZZ:**9901**::1 dev eth1  metric 1024

XXXX:YYYY:ZZZZ:**7cff**::/64 dev tun0  proto kernel  metric 1024
XXXX:YYYY:ZZZZ:**9900**::/64 via XXXX:YYYY:ZZZZ:**9901::ae40** dev eth0  metric 1024
XXXX:YYYY:ZZZZ:**9901**::/64 dev eth0  metric 1024
fe80::/64 dev eth0  proto kernel  metric 256

XXXX:YYYY:ZZZZ:**7cff**::/64 dev eth0  metric 1024
XXXX:YYYY:ZZZZ:**9900**::/64 dev tun0  metric 1024
XXXX:YYYY:ZZZZ:**9901**::/64 dev tun0  proto kernel  metric 1024
fe80::/64 dev eth0  proto kernel  metric 256

default via XXXX:YYYY:ZZZZ:**7cff::e555** dev eth0  metric 1024

C:~# traceroute -6 XXXX:YYYY:ZZZZ:**9900**::aaaa:aaa:aaaa:aaaa

traceroute to XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:dddd
 (XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:dddd), 30 hops max, 80 byte packets

1  XXXX:YYYY:ZZZZ:**9901::b015** (XXXX:YYYY:ZZZZ:**9901::b015**)  81.088 ms  81.302 ms  81.883 ms
2  XXXX:YYYY:ZZZZ:**9901::ae40** (XXXX:YYYY:ZZZZ:**9901::ae40**)  82.584 ms  82.948 ms  83.395 ms

B:~# traceroute -6 XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:dddd

traceroute to XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:dddd (XXXX:YYYY:ZZZZ:**9900**::aaaa:bbbb:cccc:dddd), 30 hops max, 80 byte packets

1  XXXX:YYYY:ZZZZ:**9901::ae40** (XXXX:YYYY:ZZZZ:**9901::ae40**)  1.072 ms  0.656 ms  0.553 ms
2  XXXX:YYYY:ZZZZ:**9901::1** (XXXX:YYYY:ZZZZ:**9901::1**)  0.943 ms  0.866 ms  0.936 ms