flags [DF], proto TCP (6), length 60)! www41050u.sakura.ne.jp.58268 > www41050u.sakura.ne.jp.http-alt: Flags [S], cksum 0x3c87 (incorrect -> 0x684b), seq 2056417443, win 43690, options [mss 65495,sackOK,TS val 1027003124 ecr 0,nop,wscale 7], length 0! ! 0x0000: 4500 003c a257 4000 4006 5c0c 31d4 6c58! ! 0x0010: 31d4 6c58 e39c 1f90 7a92 70a3 0000 0000! ! 0x0020: a002 aaaa 3c87 0000 0204 ffd7 0402 080a! ! 0x0030: 3d36 d2f4 0000 0000 0103 0307! 13:55:02.906930 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 60)! www41050u.sakura.ne.jp.http-alt > www41050u.sakura.ne.jp.58268: Flags [S.], cksum 0x3c87 (incorrect -> 0x908a), seq 270579556, ack 2056417444, win 43690, options [mss 65495,sackOK,TS val 1027003124 ecr 1027003124,nop,wscale 7], length 0! ! 0x0000: 4500 003c 0000 4000 4006 fe63 31d4 6c58! ! 0x0010: 31d4 6c58 1f90 e39c 1020 b764 7a92 70a4! ! 0x0020: a012 aaaa 3c87 0000 0204 ffd7 0402 080a! ! 0x0030: 3d36 d2f4 3d36 d2f4 0103 0307! 13:55:02.906942 IP (tos 0x0, ttl 64, id 41560, offset 0, flags [DF], proto TCP (6), length 52)! www41050u.sakura.ne.jp.58268 > www41050u.sakura.ne.jp.http-alt: Flags [.], cksum 0x3c7f (incorrect -> 0x62cf), seq 1, ack 1, win 342, options [nop,nop,TS val 1027003124 ecr 1027003124], length 0! ! 0x0000: 4500 0034 a258 4000 4006 5c13 31d4 6c58! ͜ͷHello, World!͕ฦΔ·Ͱͷ௨৴Λ tcpdumpͰ؍