IPv4との経路比較
www.kame.net
v4
1 192.168.0.238 (192.168.0.238) [AS28513] 0.923 ms 2 192.168.1.237 (192.168.1.237) [AS28513] 21.368 ms 3 JJ118001.ppp.dion.ne.jp (211.4.118.1) [AS4732] 52.082 ms 4 221.119.64.1 (221.119.64.1) [AS4732] 52.808 ms 5 211.134.168.253 (211.134.168.253) [AS2516] 53.553 ms 6 otecbb301.kddnet.ad.jp (210.155.124.209) [AS4732] 60.202 ms 7 otejbb204.kddnet.ad.jp (203.181.97.169) [AS2516] 61.555 ms 8 ix-ote207.kddnet.ad.jp (59.128.7.137) [AS2516] 62.291 ms 9 alaxala1.otemachi.wide.ad.jp (202.249.2.83) [AS2500] 63.026 ms 10 ve-5.foundry6.otemachi.wide.ad.jp (203.178.140.202) [AS2500] 63.901 ms 11 ve-42.foundry4.nezu.wide.ad.jp (203.178.136.66) [AS2500] 64.651 ms 12 ve-45.nec2.yagami.wide.ad.jp (203.178.136.74) [AS2500] 74.935 ms 13 ve-190.alaxala1.k2.wide.ad.jp (203.178.136.90) [AS2500] 77.147 ms 14 orange.kame.net (203.178.141.194) [AS2500] 76.336 ms
v6
1 2001:3e0:5d7:eeee::2 (2001:3e0:5d7:eeee::2) [AS10013] 1.004 ms 2 2001:3e0:0:30:203:e4ff:fed6:d01b (2001:3e0:0:30:203:e4ff:fed6:d01b) [AS10013] 42.064 ms 3 2001:3e0:0:30:21d:a2ff:feb4:2d82 (2001:3e0:0:30:21d:a2ff:feb4:2d82) [AS10013] 43.259 ms 4 2001:3e0:0:c:204:4eff:fea0:7854 (2001:3e0:0:c:204:4eff:fea0:7854) [AS10013] 46.136 ms 5 fa-2-1.r01.tokyjp01.jp.b6.gin.ntt.net (2001:218:2000:5000::5) [AS2914] 48.860 ms 6 ge-8-12.a15.tokyjp01.jp.ra.gin.ntt.net (2001:218:2000:2000::91) [AS2914] 52.073 ms 7 ge-8-2.a15.tokyjp01.jp.ra.gin.ntt.net (2001:218:2000:5000::82) [AS2914] 54.970 ms 8 ve44.foundry6.otemachi.wide.ad.jp (2001:200:0:10::141) [AS2500] 56.769 ms 9 ve42.foundry4.nezu.wide.ad.jp (2001:200:0:11::66) [AS2500] 59.205 ms 10 ve45.nec2.yagami.wide.ad.jp (2001:200:0:12::74) [AS2500] 65.674 ms 11 lo0.alaxala1.k2.wide.ad.jp (2001:200:0:4800::7800:1) [AS2500] 69.519 ms 12 orange.kame.net (2001:200:0:8002:203:47ff:fea5:3085) [AS2500] 70.563 ms
あまり差は無い
ipv6.2ch.net
v4
1 192.168.0.238 (192.168.0.238) [AS28513] 1.267 ms 2 192.168.1.237 (192.168.1.237) [AS28513] 31.822 ms 3 JJ118001.ppp.dion.ne.jp (211.4.118.1) [AS4732] 40.792 ms 4 221.119.64.1 (221.119.64.1) [AS4732] 42.069 ms 5 211.134.168.253 (211.134.168.253) [AS2516] 43.169 ms 6 otecbb302.kddnet.ad.jp (210.155.124.201) [AS4732] 44.099 ms 7 otejbb204.kddnet.ad.jp (203.181.97.245) [AS2516] 45.436 ms 8 cm-ote242.kddnet.ad.jp (59.128.7.27) [AS2516] 58.629 ms 9 124.211.10.66 (124.211.10.66) [AS2516] 47.513 ms 10 ge-1-0-0.transit2.nihonbashi.vectant.ne.jp (163.139.128.154) [AS2519] 49.306 ms 11 163-139-227-2.rv.vectant.ne.jp (163.139.227.2) [AS2519] 50.205 ms 12 m320-2-ae1.data-hotel.net (203.174.64.5) [AS17707] 52.919 ms 13 203-174-64-254.data-hotel.net (203.174.64.254) [AS17707] 56.714 ms 14 5b-p05-b5.data-hotel.net (125.6.175.12) [AS17707] 59.363 ms
v6
1 2001:3e0:5d7:eeee::2 (2001:3e0:5d7:eeee::2) [AS10013] 0.970 ms 2 2001:3e0:0:30:203:e4ff:fed6:d01b (2001:3e0:0:30:203:e4ff:fed6:d01b) [AS10013] 48.647 ms 3 2001:3e0:0:30:21d:a2ff:feb4:2d82 (2001:3e0:0:30:21d:a2ff:feb4:2d82) [AS10013] 49.587 ms 4 2001:3e0:0:c:204:4eff:fea0:7854 (2001:3e0:0:c:204:4eff:fea0:7854) [AS10013] 69.560 ms 5 2001:7fa:7:1:0:1:7707:1 (2001:7fa:7:1:0:1:7707:1) [AS7521] 73.334 ms 6 5b-p05-b5.9lab.org (2407:3000:6:175::12) [AS17707] 75.526 ms
HOPが少く見えるが、v6側のtracerouteはfeel6のトンネルまでのHOPを含んでいないことに注意。
ntp.nict.jp
最後まで到達しない。
v4
1 192.168.0.238 (192.168.0.238) [AS28513] 1.109 ms 2 192.168.1.237 (192.168.1.237) [AS28513] 19.456 ms 3 JJ118001.ppp.dion.ne.jp (211.4.118.1) [AS4732] 37.680 ms 4 221.119.64.1 (221.119.64.1) [AS4732] 38.699 ms 5 d-az56.line.neweb.ne.jp (211.134.168.221) [AS2516] 40.172 ms 6 otecbb302.kddnet.ad.jp (210.155.124.201) [AS4732] 41.205 ms 7 otejbb203.kddnet.ad.jp (203.181.97.145) [AS2516] 42.178 ms 8 cm-ote221.kddnet.ad.jp (203.181.101.6) [AS2516] 43.405 ms 9 203.181.102.130 (203.181.102.130) [AS2516] 44.704 ms 10 tpr5-ge0-0-0-6.jp.apan.net (203.181.249.100) [AS7660] 48.752 ms 11 nictixp1-vlan7.jp.apan.net (203.181.249.39) [AS7660] 50.634 ms 12 nictixp2-v87.nict.go.jp (133.243.239.33) [AS9355] 53.982 ms
v6
1 2001:3e0:5d7:eeee::2 (2001:3e0:5d7:eeee::2) [AS10013] 1.027 ms 2 2001:3e0:0:30:203:e4ff:fed6:d01b (2001:3e0:0:30:203:e4ff:fed6:d01b) [AS10013] 43.333 ms 3 2001:3e0:0:30:21d:a2ff:feb4:2d82 (2001:3e0:0:30:21d:a2ff:feb4:2d82) [AS10013] 44.830 ms 4 2001:3e0:0:c:204:4eff:fea0:7854 (2001:3e0:0:c:204:4eff:fea0:7854) [AS10013] 45.749 ms 5 fa-2-1.r01.tokyjp01.jp.b6.gin.ntt.net (2001:218:2000:5000::5) [AS2914] 47.507 ms 6 ge-8-12.a15.tokyjp01.jp.ra.gin.ntt.net (2001:218:2000:2000::91) [AS2914] 50.859 ms 7 xe-4-1-0.r20.tokyjp01.jp.bb.gin.ntt.net (2001:218:0:6000::10d) [AS2914] 53.221 ms 8 as-1.r20.newthk01.hk.bb.gin.ntt.net (2001:218:0:2000::5a) [AS2914] 107.305 ms 9 xe-1-2.a04.newthk01.hk.ra.gin.ntt.net (2001:218:0:6000::176) [AS2914] 126.228 ms 10 2001:7fa:0:1::ca28:a1ed (2001:7fa:0:1::ca28:a1ed) [*] 172.218 ms 11 2001:320:1b00:1::2 (2001:320:1b00:1::2) [*] 267.870 ms 12 iplgng-kreonet2.abilene.ucaid.edu (2001:468:ff:12c2::1) [*] 290.221 ms 13 so-1-3-0.0.rtr.newy32aoa.net.internet2.edu (2001:468:ff:206::2) [*] 301.482 ms 14 2001:2f8:1:ff::d (2001:2f8:1:ff::d) [AS2907] 314.235 ms 15 tokyo1-dc-R-P-2-3-0-11-inet6.sinet.ad.jp (2001:2f8:0:22a::1) [AS2907] 303.220 ms 16 v6-2-GE-0-1-inet6.sinet.ad.jp (2001:2f8:0:222::2) [AS2907] 320.442 ms 17 2001:2f8:1::8e (2001:2f8:1::8e) [AS2907] 275.628 ms
同じSINETなので同様の問題がある。逆に、SINET以外ではこのような問題が有るホストは現段階では見つけられていない。
www.hitachi.co.jp等もv4やv6でtracerouteが到達しない。
考察
ホストの命名的に考えると、jpからhkになってるNTTで何かおかしいことになっているような気がする。
参考:トンネルまでのroute
1 192.168.0.238 (192.168.0.238) [AS28513] 1.237 ms 2 192.168.1.237 (192.168.1.237) [AS28513] 43.427 ms 3 JJ118001.ppp.dion.ne.jp (211.4.118.1) [AS4732] 84.009 ms 4 221.119.64.1 (221.119.64.1) [AS4732] 86.642 ms 5 211.134.168.245 (211.134.168.245) [AS2516] 89.460 ms 6 otecbb301.kddnet.ad.jp (210.155.124.209) [AS4732] 91.900 ms 7 otejbb204.kddnet.ad.jp (203.181.97.169) [AS2516] 94.039 ms 8 ix-ote208.kddnet.ad.jp (59.128.7.86) [AS2516] 96.590 ms 9 210.163.230.93 (210.163.230.93) [AS4713] 100.187 ms 10 210.254.187.33 (210.254.187.33) [AS4713] 101.105 ms 11 210.145.252.170 (210.145.252.170) [AS4713] 102.609 ms 12 210.163.230.234 (210.163.230.234) [AS4713] 106.067 ms 13 xe-1-1.a14.tokyjp01.jp.ra.gin.ntt.net (61.120.145.186) [AS2914] 107.332 ms 14 203.105.72.98 (203.105.72.98) [AS2914] 279.602 ms 15 219.99.124.57 (219.99.124.57) [AS10013] 113.433 ms 16 TunnelServer1.Feel6.jp (43.244.255.36) [AS10013] 114.345 ms
ローカルで発生している40msの遅延は、パケット分析のためにOpenVPNを通した上でTee分岐して蓄積しているのが主因。単純な伝送遅延は1〜5ms程度(802.11n無線LAN)。PPPoEによる遅延もさらに40ms程度。
