1 [Lab] 6to4 Tunnels

2 Pre-requisite Reading RFC 3056 – Connection of IPv6 Domains via IPv4 Clouds Y. Hei and K. Yamazaki, " Traffic analysis and worldwide operation of open 6to4 relays for IPv6 deployment", Proceedings of 2004 International Symposium on Applications and the Internet (SAINT 2004), pp Traffic analysis and worldwide operation of open 6to4 relays for IPv6 deployment –Authors from KDDI, Japan.

3 Network Environment If you get a native IPv6 address, you don’t need a 6to4 tunnel. If you get a private IPv4 address, 6to4 tunnel cannot be created. –Configure your IPv4 address to xx. –Now you see the 6to4 interface.

4 6to4 Tunnel Interface (RFC 3068)

Try to ping each other Capture the ICMPv6 packets, and mail to me. What is your capture filter? –ip6? –ip?

6 Routing to 2002:: is easy IPv4 IPv6 Network 6to4 Router2 6to4 Router Network prefix: 2002:83F3:812C::/48 Network prefix: 2002:8C6E:C7FA::/48 E0 2002:83F3:812C:1::3 2002:8C6E:C7FA:2::5 IPv6 SRC 2002:83F3:812C:1::3 Data IPv6 DEST 2002:8C6E:C7FA:2::5 IPv6 SRC 2002:83F3:812C:1::3 Data IPv6 DEST 2002:8C6E:C7FA:2::5 IPv6 SRC 2002:83F3:812C:1::3 Data IPv6 DEST 2002:8C6E:C7FA:2::5 IPv4 SRC IPv4 DEST

How about 2001:: ? IPv4 IPv6 Network 6to4 Relay Router 6to4 Router :83F3:812C:1::3 2001:48a8:68fe:: to4 Relay Router IPv4 2002::/16

8 ping6

9 Capture Filter of Wireshark ip host host or host ip[9]==41

10 traceroute6 Tracing route to [2001:e10:6840:67:4c33:e188:4d59:364f] from 2002:a316:1e08::a316:1e08 over a maximum of 30 hops: – 1 15 ms 14 ms 19 ms 2002:a319:f6fb::1 – 2 18 ms 24 ms 23 ms 2001:288:0:1659:192:83:196:111 – 3 22 ms 18 ms 23 ms 2001:288:0:f:111::1 – ms 301 ms 283 ms 2001:e10:ffff:101::1 – ms 230 ms 231 ms 2001:e10:ffff:1a00::1 – ms 234 ms 228 ms 2001:e10:ffff:1a01::2 – ms 319 ms 229 ms [2001:e10:6840:67:4c33:e188:4d59:364f] traceroute6 to 2002:a316:1e08::a316:1e08 (2002:a316:1e08::a316:1e08) from 2001:e10:6840:20:204:76ff:fee2:b1bd, 64 hops max, 12 byte packets – :e10:6840:20:: ms ms ms – :e10:6840:1:: ms ms ms – :e10:ffff:1a01:: ms ms ms – :e10:ffff:1100:: ms ms ms – :e10:ffff:300:: ms ms ms – :e10:ffff:304:: ms ms ms – 7 xe rtr.wash.net.internet2.edu ms ms ms – 8 internet2-virt-internet2-xe rox.net ms ms ms – 9 bar-internet2-ge rox.net ms ms ms –10 6to4-bar-f4-0.3rox.net ms ms ms – :a316:1e08::a316:1e ms ms ms

11 traceroute tracert –1 9 ms 5 ms 10 ms –2 7 ms 5 ms 5 ms ip098.puli ncnu.edu.tw [ ] –3 5 ms 10 ms 4 ms ip091.puli ncnu.edu.tw [ ] –4 14 ms 16 ms 16 ms tracert (6to4-bar-f4-0.3rox.net) – 1 4 ms 7 ms 4 ms – 2 5 ms 6 ms 4 ms ip098.puli ncnu.edu.tw [ ] – 3 5 ms 4 ms 4 ms ip091.puli ncnu.edu.tw [ ] – 4 10 ms 9 ms 11 ms bb-MOE-TWAREN.TANet.edu.tw [ ] – 5 10 ms 15 ms 10 ms – 6 11 ms 10 ms 10 ms – 7 44 ms 44 ms 41 ms – 8 42 ms 41 ms 52 ms tpr5-taiwan.jp.apan.net [ ] – ms 158 ms 170 ms losa-tokyo-tp2.transpac2.net [ ] – ms 155 ms 155 ms abilene-1-lo-jmb-702.lsanca.pacificwave.net [ ] – ms 296 ms 188 ms xe rtr.hous.net.internet2.edu [ ] – ms 210 ms 208 ms xe rtr.atla.net.internet2.edu [ ] – ms 308 ms 306 ms xe rtr.wash.net.internet2.edu [ ] – ms 301 ms 229 ms internet2-virt-internet2-xe rox.net [ ] – ms 231 ms 276 ms bar-internet2-ge rox.net [ ] – ms 235 ms 306 ms 6to4-bar-f4-0.3rox.net [ ]

ping Does your Windows 7/XP prefer to send packets via IPv4 or IPv6? ping iptv.bupt.edu.cn 12

13 Further Reading Advisory Guidelines for 6to4 Deployment draft-ietf-v6ops-6to4-advisory-01 draft-ietf-v6ops-6to4-advisory-01 Request to move Connection of IPv6 Domains via IPv4 Clouds (6to4) to Historic status draft-ietf-v6ops-6to4-to-historic-03 draft-ietf-v6ops-6to4-to-historic-03