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[Lab] 6to4 Tunnels

[Lab] 6to4 Tunnels. Pre-requisite Reading. RFC 3056 – Connection of IPv6 Domains via IPv4 Clouds

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[Lab] 6to4 Tunnels

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  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.265-268. • 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 163.22.30.xx. • Now you see the 6to4 interface.

  4. 6to4 Tunnel Interface 163.22.30.8 192.88.99.1(RFC 3068)

  5. 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 IPv6 Network IPv6 Network IPv4 2002:8C6E:C7FA:2::5 2002:83F3:812C:1::3 6to4 Router1 6to4 Router2 E0 E0 131.243.129.44 140.110.199.250 Network prefix: 2002:83F3:812C::/48 Network prefix: 2002:8C6E:C7FA::/48 IPv4 SRC 131.243.129.44 IPv4 DEST 140.110.199.250 IPv6 SRC 2002:83F3:812C:1::3 IPv6 SRC 2002:83F3:812C:1::3 IPv6 SRC 2002:83F3:812C:1::3 IPv6 DEST 2002:8C6E:C7FA:2::5 IPv6 DEST 2002:8C6E:C7FA:2::5 IPv6 DEST 2002:8C6E:C7FA:2::5 Data Data Data 6

  7. How about 2001:: ? IPv4 2002:83F3:812C:1::3 6to4 Router1 6to4 Relay Router 2001:48a8:68fe::151 192.88.99.1 2002::/16 IPv4 6to4 Relay Router 2002::/16 IPv6 Network 192.88.99.1

  8. ping6 www.ncnu.edu.tw

  9. Capture Filter of Wireshark • ip host 192.88.99.1 • host 192.88.99.1 or host 192.88.115.135 • ip[9]==41

  10. traceroute6 • Tracing route to www.ncnu.edu.tw [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 • 4 231 ms 301 ms 283 ms 2001:e10:ffff:101::1 • 5 236 ms 230 ms 231 ms 2001:e10:ffff:1a00::1 • 6 228 ms 234 ms 228 ms 2001:e10:ffff:1a01::2 • 7 291 ms 319 ms 229 ms www.ncnu.edu.tw [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 • 1 2001:e10:6840:20::1 0.867 ms 0.743 ms 1.191 ms • 2 2001:e10:6840:1::1 0.707 ms 0.699 ms 0.636 ms • 3 2001:e10:ffff:1a01::1 0.699 ms 0.748 ms 0.966 ms • 4 2001:e10:ffff:1100::2 201.968 ms 197.438 ms 208.527 ms • 5 2001:e10:ffff:300::1 240.724 ms 196.756 ms 287.042 ms • 6 2001:e10:ffff:304::2 182.370 ms 182.350 ms 182.361 ms • 7 xe-0-1-3.0.rtr.wash.net.internet2.edu 341.875 ms 425.605 ms 343.927 ms • 8 internet2-virt-internet2-xe-0-0-0-506.3rox.net 213.375 ms 213.238 ms 213.274 ms • 9 bar-internet2-ge-1-2-0-585.3rox.net 213.523 ms 214.209 ms 213.940 ms • 10 6to4-bar-f4-0.3rox.net 213.620 ms 213.494 ms 218.251 ms • 11 2002:a316:1e08::a316:1e08 236.394 ms 229.709 ms 230.471 ms

  11. traceroute • tracert 192.88.99.1 • 1 9 ms 5 ms 10 ms 10.102.1.254 • 2 7 ms 5 ms 5 ms ip098.puli255-64-203.ncnu.edu.tw [203.64.255.98] • 3 5 ms 10 ms 4 ms ip091.puli255-64-203.ncnu.edu.tw [203.64.255.91] • 4 14 ms 16 ms 16 ms 192.88.99.1 • tracert 192.88.115.135 (6to4-bar-f4-0.3rox.net) • 1 4 ms 7 ms 4 ms 10.102.1.254 • 2 5 ms 6 ms 4 ms ip098.puli255-64-203.ncnu.edu.tw [203.64.255.98] • 3 5 ms 4 ms 4 ms ip091.puli255-64-203.ncnu.edu.tw [203.64.255.91] • 4 10 ms 9 ms 11 ms bb-MOE-TWAREN.TANet.edu.tw [192.83.196.111] • 5 10 ms 15 ms 10 ms 202.169.174.58 • 6 11 ms 10 ms 10 ms 202.169.174.110 • 7 44 ms 44 ms 41 ms 202.169.174.149 • 8 42 ms 41 ms 52 ms tpr5-taiwan.jp.apan.net [203.181.248.154] • 9 155 ms 158 ms 170 ms losa-tokyo-tp2.transpac2.net [192.203.116.145] • 10 193 ms 155 ms 155 ms abilene-1-lo-jmb-702.lsanca.pacificwave.net [207.231.240.131] • 11 187 ms 296 ms 188 ms xe-0-1-0.0.rtr.hous.net.internet2.edu [64.57.28.97] • 12 320 ms 210 ms 208 ms xe-1-0-1.0.rtr.atla.net.internet2.edu [64.57.28.113] • 13 325 ms 308 ms 306 ms xe-1-1-3.0.rtr.wash.net.internet2.edu [64.57.28.7] • 14 232 ms 301 ms 229 ms internet2-virt-internet2-xe-0-0-0-506.3rox.net [192.88.115.24] • 15 252 ms 231 ms 276 ms bar-internet2-ge-1-2-0-585.3rox.net [192.88.115.54] • 16 230 ms 235 ms 306 ms 6to4-bar-f4-0.3rox.net [192.88.115.135]

  12. ping www.ipv6.tw • Does your Windows 7/XP prefer to send packets via IPv4 or IPv6? • ping iptv.bupt.edu.cn

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

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