http通信をtcpdump(DNS通信も含む)

ipv6を無効にして再度チャレンジ

コマンド:tcpdump port 53 or port 80

コマンド:curl --head http://yahoo.co.jp

 

結論:ipv6の通信はなくなった模様。

   無駄な通信が発生することを考えれば、ipv6は無効化することが正しいと思う。

 

 

21:36:26.306825 IP 192.168.3.150.44743 > google-public-dns-a.google.com.domain: 30583+ A? yahoo.co.jp. (29)
21:36:26.307460 IP 192.168.3.150.32973 > google-public-dns-a.google.com.domain: 23277+ PTR? 8.8.8.8.in-addr.arpa. (38)
21:36:26.368077 IP google-public-dns-a.google.com.domain > 192.168.3.150.44743: 30583 2/0/0 A 182.22.59.229, A 183.79.135.206 (61)
21:36:26.368375 IP 192.168.3.150.48478 > f1.top.vip.ssk.yahoo.co.jp.http: Flags [S], seq 4223514307, win 14600, options [mss 1460,sackOK,TS val 434099 ecr 0,nop,wscale 7], length 0
21:36:26.374213 IP google-public-dns-a.google.com.domain > 192.168.3.150.32973: 23277 1/0/0 PTR google-public-dns-a.google.com. (82)
21:36:26.374423 IP 192.168.3.150.43402 > google-public-dns-a.google.com.domain: 51717+ PTR? 150.3.168.192.in-addr.arpa. (44)
21:36:26.397197 IP f1.top.vip.ssk.yahoo.co.jp.http > 192.168.3.150.48478: Flags [S.], seq 3170009284, ack 4223514308, win 14480, options [mss 1460,sackOK,TS val 3974962699 ecr 434099,nop,wscale 9], length 0
21:36:26.397250 IP 192.168.3.150.48478 > f1.top.vip.ssk.yahoo.co.jp.http: Flags [.], ack 1, win 115, options [nop,nop,TS val 434128 ecr 3974962699], length 0
21:36:26.397379 IP 192.168.3.150.48478 > f1.top.vip.ssk.yahoo.co.jp.http: Flags [P.], seq 1:168, ack 1, win 115, options [nop,nop,TS val 434128 ecr 3974962699], length 167
21:36:26.400547 IP google-public-dns-a.google.com.domain > 192.168.3.150.43402: 51717 NXDomain 0/0/0 (44)
21:36:26.400879 IP 192.168.3.150.54250 > google-public-dns-a.google.com.domain: 48938+ PTR? 229.59.22.182.in-addr.arpa. (44)
21:36:26.428707 IP f1.top.vip.ssk.yahoo.co.jp.http > 192.168.3.150.48478: Flags [.], ack 168, win 31, options [nop,nop,TS val 3974962731 ecr 434128], length 0
21:36:26.431882 IP f1.top.vip.ssk.yahoo.co.jp.http > 192.168.3.150.48478: Flags [P.], seq 1:557, ack 168, win 31, options [nop,nop,TS val 3974962732 ecr 434128], length 556
21:36:26.431891 IP 192.168.3.150.48478 > f1.top.vip.ssk.yahoo.co.jp.http: Flags [.], ack 557, win 123, options [nop,nop,TS val 434163 ecr 3974962732], length 0
21:36:26.431918 IP f1.top.vip.ssk.yahoo.co.jp.http > 192.168.3.150.48478: Flags [F.], seq 557, ack 168, win 31, options [nop,nop,TS val 3974962732 ecr 434128], length 0
21:36:26.432110 IP 192.168.3.150.48478 > f1.top.vip.ssk.yahoo.co.jp.http: Flags [F.], seq 168, ack 558, win 123, options [nop,nop,TS val 434163 ecr 3974962732], length 0
21:36:26.461710 IP f1.top.vip.ssk.yahoo.co.jp.http > 192.168.3.150.48478: Flags [.], ack 169, win 31, options [nop,nop,TS val 3974962763 ecr 434163], length 0
21:36:26.461736 IP google-public-dns-a.google.com.domain > 192.168.3.150.54250: 48938 1/0/0 PTR f1.top.vip.ssk.yahoo.co.jp. (84)