利用しているDTI VPSはIPv6対応しており、また自宅からはFreebitのFeel6を利用してIPv6でアクセスできるようにしてある。
その経路・レスポンスタイムを調べてみる。
１．IPv6アクセスの場合
[code]
# tracepath6 aaaa.furelo.jp
— aaaa.furelo.jp ping statistics —
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 27.461/27.715/28.108/0.336 ms
exchange:/var/backup/tokkyo # tra6 aaaa.furelo.jp
tracepath tracepath6 traceroute traceroute6 trap
exchange:/var/backup/tokkyo # tracepath6 aaaa.furelo.jp
1?: [LOCALHOST] pmtu 1500
1: 2001:3e0:75d::1 3.239ms
2: 2001:3e0:75d::1 asymm 1 3.269ms pmtu 1280
2: 2001:3e0:0:30:230:b6ff:fedf:541b 29.764ms
3: feel6-gate.feel6.jp 28.901ms
4: 2001:3e0:0:c:204:4eff:fea0:7854 30.739ms
5: freebit-gate.tunnel1.otemachi4.v6.dti.ad.jp 31.577ms
6: 2001:2e8:20:11::11 asymm 7 32.934ms
7: ix1-gate-oi1.oi.v6.dti.ad.jp asymm 8 34.867ms
8: 2001:2e8:22:202::20 35.115ms
9: 2001:2e8:61d:0:2:2:0:1 34.656ms
10: v6-2001-2e8-61d-0-2-1-0-9f.ub-freebit.net asymm 9 34.379ms reached
Resume: pmtu 1280 hops 10 back 9
[/code]
２．IPv4アクセスの場合
[code]
# tracepath www.furelo.jp
1: exchange.furelo.jp (192.168.11.102) 0.055ms pmtu 1500
1: setup.netvolante.jp (192.168.11.1) 2.236ms
2: setup.netvolante.jp (192.168.11.1) asymm 1 2.354ms pmtu 1454
3: HOKKAIDO3-NTTeast0.flets.2iij.net (203.180.73.81) 9.783ms
4: spr002lip20.IIJ.Net (203.180.195.5) 8.449ms
5: spr002bb01.IIJ.Net (58.138.116.149) asymm 6 8.996ms
6: tky001bb01.IIJ.Net (58.138.98.106) asymm 7 24.659ms
7: tky001bf00.IIJ.Net (58.138.80.217) asymm 8 23.897ms
8: tky001ix01.IIJ.Net (58.138.80.98) asymm 9 24.285ms
9: 210.173.177.13 (210.173.177.13) asymm 10 24.389ms
10: 122.28.104.173 (122.28.104.173) asymm 11 25.165ms
11: 118.23.168.20 (118.23.168.20) asymm 12 25.195ms
12: 118.23.146.126 (118.23.146.126) asymm 13 25.513ms
13: 122.28.177.110 (122.28.177.110) asymm 14 285.193ms
14: ix1-gate-oi1.oi.dti.ad.jp (202.216.225.182) asymm 15 34.900ms
15: core3-10.oi.dti.ad.jp (203.181.69.66) 29.311ms
16: 202.216.248.137 (202.216.248.137) 29.625ms
17: v-183-181-1-247.ub-freebit.net (183.181.1.247) 30.826ms
18: v-183-181-0-159.ub-freebit.net (183.181.0.159) asymm 17 31.224ms reached
Resume: pmtu 1454 hops 18 back 17
[/code]
IPv4でのアクセスとそれほど遜色名いレスポンスタイムが出ている。