Hi All, When try to connect to the sites http://www.stiftung-warentest.de/online/ and http://www.bosch.de, I get DUP ACKs in the session and it never completes. At first, I thought it was either a site or an upstream provider problem. I tried from other locations outside my company and other machines within the company. Everything works fine. I ran a tcpdump on the connection and noticed the DUP ACKs and started trying different things suggested by mailing lists, etc. I tried changing the MTU and congestion algorithms. Nothing worked. I enabled timestamping so I could an idea of the time span. The connection completed, but was really slow. The DUP ACKs are still present in the dump when timestamping is used, but I'm not sure why timestamping would make a difference. Maybe someone can point that out? What prompted me to send a message to this list is the fact it worked on an earlier kernel version, but not on the newer ones. Here is the dirt from the tcpdump and my config. I'm happy to provide any additional information. Any help would be greatly appreciated. OS: Fedora Core 4 NIC Driver: eth0 3c59x Kernel Version and whether the session completed: 2.6.5-1.358 (Fedora Core 2 Kernel): Success (No intervention required) 2.6.11-1.1369_FC4: Failed (Slow with timestamping) 2.6.13-1.1526_FC4: Failed (Slow with timestamping) 2.6.14-1.1637_FC4: Failed (Slow with timestamping) 2.6.14-1.1656_FC4: Failed (Slow with timestamping) 2.6.15-1.1823_FC4: Failed (Slow with timestamping) /proc/sys/net/ipv4 options: /proc/sys/net/ipv4/conf/eth0/promote_secondaries= 0 /proc/sys/net/ipv4/conf/eth0/force_igmp_version= 0 /proc/sys/net/ipv4/conf/eth0/disable_policy= 0 /proc/sys/net/ipv4/conf/eth0/disable_xfrm= 0 /proc/sys/net/ipv4/conf/eth0/arp_ignore= 0 /proc/sys/net/ipv4/conf/eth0/arp_announce= 0 /proc/sys/net/ipv4/conf/eth0/arp_filter= 0 /proc/sys/net/ipv4/conf/eth0/tag= 0 /proc/sys/net/ipv4/conf/eth0/log_martians= 0 /proc/sys/net/ipv4/conf/eth0/bootp_relay= 0 /proc/sys/net/ipv4/conf/eth0/medium_id= 0 /proc/sys/net/ipv4/conf/eth0/proxy_arp= 0 /proc/sys/net/ipv4/conf/eth0/accept_source_route= 1 /proc/sys/net/ipv4/conf/eth0/send_redirects= 1 /proc/sys/net/ipv4/conf/eth0/rp_filter= 0 /proc/sys/net/ipv4/conf/eth0/shared_media= 1 /proc/sys/net/ipv4/conf/eth0/secure_redirects= 1 /proc/sys/net/ipv4/conf/eth0/accept_redirects= 1 /proc/sys/net/ipv4/conf/eth0/mc_forwarding= 0 /proc/sys/net/ipv4/conf/eth0/forwarding= 0 /proc/sys/net/ipv4/conf/default/promote_secondaries= 0 /proc/sys/net/ipv4/conf/default/force_igmp_version= 0 /proc/sys/net/ipv4/conf/default/disable_policy= 0 /proc/sys/net/ipv4/conf/default/disable_xfrm= 0 /proc/sys/net/ipv4/conf/default/arp_ignore= 0 /proc/sys/net/ipv4/conf/default/arp_announce= 0 /proc/sys/net/ipv4/conf/default/arp_filter= 0 /proc/sys/net/ipv4/conf/default/tag= 0 /proc/sys/net/ipv4/conf/default/log_martians= 0 /proc/sys/net/ipv4/conf/default/bootp_relay= 0 /proc/sys/net/ipv4/conf/default/medium_id= 0 /proc/sys/net/ipv4/conf/default/proxy_arp= 0 /proc/sys/net/ipv4/conf/default/accept_source_route= 1 /proc/sys/net/ipv4/conf/default/send_redirects= 1 /proc/sys/net/ipv4/conf/default/rp_filter= 0 /proc/sys/net/ipv4/conf/default/shared_media= 1 /proc/sys/net/ipv4/conf/default/secure_redirects= 1 /proc/sys/net/ipv4/conf/default/accept_redirects= 1 /proc/sys/net/ipv4/conf/default/mc_forwarding= 0 /proc/sys/net/ipv4/conf/default/forwarding= 0 /proc/sys/net/ipv4/conf/all/promote_secondaries= 0 /proc/sys/net/ipv4/conf/all/force_igmp_version= 0 /proc/sys/net/ipv4/conf/all/disable_policy= 0 /proc/sys/net/ipv4/conf/all/disable_xfrm= 0 /proc/sys/net/ipv4/conf/all/arp_ignore= 0 /proc/sys/net/ipv4/conf/all/arp_announce= 0 /proc/sys/net/ipv4/conf/all/arp_filter= 0 /proc/sys/net/ipv4/conf/all/tag= 0 /proc/sys/net/ipv4/conf/all/log_martians= 0 /proc/sys/net/ipv4/conf/all/bootp_relay= 0 /proc/sys/net/ipv4/conf/all/medium_id= 0 /proc/sys/net/ipv4/conf/all/proxy_arp= 0 /proc/sys/net/ipv4/conf/all/accept_source_route= 0 /proc/sys/net/ipv4/conf/all/send_redirects= 1 /proc/sys/net/ipv4/conf/all/rp_filter= 1 /proc/sys/net/ipv4/conf/all/shared_media= 1 /proc/sys/net/ipv4/conf/all/secure_redirects= 1 /proc/sys/net/ipv4/conf/all/accept_redirects= 1 /proc/sys/net/ipv4/conf/all/mc_forwarding= 0 /proc/sys/net/ipv4/conf/all/forwarding= 0 /proc/sys/net/ipv4/conf/lo/promote_secondaries= 0 /proc/sys/net/ipv4/conf/lo/force_igmp_version= 0 /proc/sys/net/ipv4/conf/lo/disable_policy= 1 /proc/sys/net/ipv4/conf/lo/disable_xfrm= 1 /proc/sys/net/ipv4/conf/lo/arp_ignore= 0 /proc/sys/net/ipv4/conf/lo/arp_announce= 0 /proc/sys/net/ipv4/conf/lo/arp_filter= 0 /proc/sys/net/ipv4/conf/lo/tag= 0 /proc/sys/net/ipv4/conf/lo/log_martians= 0 /proc/sys/net/ipv4/conf/lo/bootp_relay= 0 /proc/sys/net/ipv4/conf/lo/medium_id= 0 /proc/sys/net/ipv4/conf/lo/proxy_arp= 0 /proc/sys/net/ipv4/conf/lo/accept_source_route= 1 /proc/sys/net/ipv4/conf/lo/send_redirects= 1 /proc/sys/net/ipv4/conf/lo/rp_filter= 0 /proc/sys/net/ipv4/conf/lo/shared_media= 1 /proc/sys/net/ipv4/conf/lo/secure_redirects= 1 /proc/sys/net/ipv4/conf/lo/accept_redirects= 1 /proc/sys/net/ipv4/conf/lo/mc_forwarding= 0 /proc/sys/net/ipv4/conf/lo/forwarding= 0 /proc/sys/net/ipv4/neigh/eth0/base_reachable_time_ms= 30000 /proc/sys/net/ipv4/neigh/eth0/retrans_time_ms= 1000 /proc/sys/net/ipv4/neigh/eth0/locktime= 100 /proc/sys/net/ipv4/neigh/eth0/proxy_delay= 80 /proc/sys/net/ipv4/neigh/eth0/anycast_delay= 100 /proc/sys/net/ipv4/neigh/eth0/proxy_qlen= 64 /proc/sys/net/ipv4/neigh/eth0/unres_qlen= 3 /proc/sys/net/ipv4/neigh/eth0/gc_stale_time= 60 /proc/sys/net/ipv4/neigh/eth0/delay_first_probe_time= 5 /proc/sys/net/ipv4/neigh/eth0/base_reachable_time= 30 /proc/sys/net/ipv4/neigh/eth0/retrans_time= 100 /proc/sys/net/ipv4/neigh/eth0/app_solicit= 0 /proc/sys/net/ipv4/neigh/eth0/ucast_solicit= 3 /proc/sys/net/ipv4/neigh/eth0/mcast_solicit= 3 /proc/sys/net/ipv4/neigh/lo/base_reachable_time_ms= 30000 /proc/sys/net/ipv4/neigh/lo/retrans_time_ms= 1000 /proc/sys/net/ipv4/neigh/lo/locktime= 100 /proc/sys/net/ipv4/neigh/lo/proxy_delay= 80 /proc/sys/net/ipv4/neigh/lo/anycast_delay= 100 /proc/sys/net/ipv4/neigh/lo/proxy_qlen= 64 /proc/sys/net/ipv4/neigh/lo/unres_qlen= 3 /proc/sys/net/ipv4/neigh/lo/gc_stale_time= 60 /proc/sys/net/ipv4/neigh/lo/delay_first_probe_time= 5 /proc/sys/net/ipv4/neigh/lo/base_reachable_time= 30 /proc/sys/net/ipv4/neigh/lo/retrans_time= 100 /proc/sys/net/ipv4/neigh/lo/app_solicit= 0 /proc/sys/net/ipv4/neigh/lo/ucast_solicit= 3 /proc/sys/net/ipv4/neigh/lo/mcast_solicit= 3 /proc/sys/net/ipv4/neigh/default/base_reachable_time_ms= 30000 /proc/sys/net/ipv4/neigh/default/retrans_time_ms= 1000 /proc/sys/net/ipv4/neigh/default/gc_thresh3= 1024 /proc/sys/net/ipv4/neigh/default/gc_thresh2= 512 /proc/sys/net/ipv4/neigh/default/gc_thresh1= 128 /proc/sys/net/ipv4/neigh/default/gc_interval= 30 /proc/sys/net/ipv4/neigh/default/locktime= 100 /proc/sys/net/ipv4/neigh/default/proxy_delay= 80 /proc/sys/net/ipv4/neigh/default/anycast_delay= 100 /proc/sys/net/ipv4/neigh/default/proxy_qlen= 64 /proc/sys/net/ipv4/neigh/default/unres_qlen= 3 /proc/sys/net/ipv4/neigh/default/gc_stale_time= 60 /proc/sys/net/ipv4/neigh/default/delay_first_probe_time= 5 /proc/sys/net/ipv4/neigh/default/base_reachable_time= 30 /proc/sys/net/ipv4/neigh/default/retrans_time= 100 /proc/sys/net/ipv4/neigh/default/app_solicit= 0 /proc/sys/net/ipv4/neigh/default/ucast_solicit= 3 /proc/sys/net/ipv4/neigh/default/mcast_solicit= 3 /proc/sys/net/ipv4/tcp_abc= 1 /proc/sys/net/ipv4/tcp_congestion_control= bic /proc/sys/net/ipv4/tcp_tso_win_divisor= 3 /proc/sys/net/ipv4/tcp_moderate_rcvbuf= 1 /proc/sys/net/ipv4/tcp_no_metrics_save= 0 /proc/sys/net/ipv4/ipfrag_secret_interval= 600 /proc/sys/net/ipv4/tcp_low_latency= 0 /proc/sys/net/ipv4/tcp_frto= 0 /proc/sys/net/ipv4/tcp_tw_reuse= 0 /proc/sys/net/ipv4/icmp_ratemask= 6168 /proc/sys/net/ipv4/icmp_ratelimit= 250 /proc/sys/net/ipv4/tcp_adv_win_scale= 2 /proc/sys/net/ipv4/tcp_app_win= 31 /proc/sys/net/ipv4/tcp_rmem= 4096 87380 8388608 /proc/sys/net/ipv4/tcp_wmem= 4096 87380 8388608 /proc/sys/net/ipv4/tcp_mem= 393216 524288 786432 /proc/sys/net/ipv4/tcp_dsack= 1 /proc/sys/net/ipv4/tcp_ecn= 0 /proc/sys/net/ipv4/tcp_reordering= 3 /proc/sys/net/ipv4/tcp_fack= 1 /proc/sys/net/ipv4/tcp_orphan_retries= 0 /proc/sys/net/ipv4/inet_peer_gc_maxtime= 120 /proc/sys/net/ipv4/inet_peer_gc_mintime= 10 /proc/sys/net/ipv4/inet_peer_maxttl= 600 /proc/sys/net/ipv4/inet_peer_minttl= 120 /proc/sys/net/ipv4/inet_peer_threshold= 65664 /proc/sys/net/ipv4/igmp_max_msf= 10 /proc/sys/net/ipv4/igmp_max_memberships= 20 /proc/sys/net/ipv4/route/secret_interval= 600 /proc/sys/net/ipv4/route/min_adv_mss= 256 /proc/sys/net/ipv4/route/min_pmtu= 552 /proc/sys/net/ipv4/route/mtu_expires= 600 /proc/sys/net/ipv4/route/gc_elasticity= 8 /proc/sys/net/ipv4/route/error_burst= 1250 /proc/sys/net/ipv4/route/error_cost= 250 /proc/sys/net/ipv4/route/redirect_silence= 5120 /proc/sys/net/ipv4/route/redirect_number= 9 /proc/sys/net/ipv4/route/redirect_load= 5 /proc/sys/net/ipv4/route/gc_interval= 60 /proc/sys/net/ipv4/route/gc_timeout= 300 /proc/sys/net/ipv4/route/gc_min_interval_ms= 500 /proc/sys/net/ipv4/route/gc_min_interval= 0 /proc/sys/net/ipv4/route/max_size= 1048576 /proc/sys/net/ipv4/route/gc_thresh= 65536 /proc/sys/net/ipv4/route/max_delay= 10 /proc/sys/net/ipv4/route/min_delay= 2 /proc/sys/net/ipv4/icmp_errors_use_inbound_ifaddr= 0 /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses= 0 /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts= 1 /proc/sys/net/ipv4/icmp_echo_ignore_all= 0 /proc/sys/net/ipv4/ip_local_port_range= 32768 61000 /proc/sys/net/ipv4/tcp_max_syn_backlog= 1024 /proc/sys/net/ipv4/tcp_rfc1337= 0 /proc/sys/net/ipv4/tcp_stdurg= 0 /proc/sys/net/ipv4/tcp_abort_on_overflow= 0 /proc/sys/net/ipv4/tcp_tw_recycle= 0 /proc/sys/net/ipv4/tcp_syncookies= 0 /proc/sys/net/ipv4/tcp_fin_timeout= 60 /proc/sys/net/ipv4/tcp_retries2= 15 /proc/sys/net/ipv4/tcp_retries1= 3 /proc/sys/net/ipv4/tcp_keepalive_intvl= 75 /proc/sys/net/ipv4/tcp_keepalive_probes= 9 /proc/sys/net/ipv4/tcp_keepalive_time= 7200 /proc/sys/net/ipv4/ipfrag_time= 30 /proc/sys/net/ipv4/ip_dynaddr= 0 /proc/sys/net/ipv4/ipfrag_low_thresh= 196608 /proc/sys/net/ipv4/ipfrag_high_thresh= 262144 /proc/sys/net/ipv4/tcp_max_tw_buckets= 180000 /proc/sys/net/ipv4/tcp_max_orphans= 131072 /proc/sys/net/ipv4/tcp_synack_retries= 5 /proc/sys/net/ipv4/tcp_syn_retries= 5 /proc/sys/net/ipv4/ip_nonlocal_bind= 0 /proc/sys/net/ipv4/ip_no_pmtu_disc= 0 /proc/sys/net/ipv4/ip_autoconfig= 0 /proc/sys/net/ipv4/ip_default_ttl= 64 /proc/sys/net/ipv4/ip_forward= 0 /proc/sys/net/ipv4/tcp_retrans_collapse= 1 /proc/sys/net/ipv4/tcp_sack= 0 /proc/sys/net/ipv4/tcp_window_scaling= 1 /proc/sys/net/ipv4/tcp_timestamps= 1 and the tcpdump (My ip has been scrubbed and replaced by 192.168.1.1) : No. Time Source Destination Protocol Info 1 0.000000 192.168.1.1 139.15.251.239 HTTP GET /js/header.js HTTP/1.1[Packet size limited during capture] Frame 1 (565 bytes on wire, 96 bytes captured) Ethernet II, Src: DellComp_a6:e5:65 (00:06:5b:a6:e5:65), Dst: Cisco_30:79:38 (00:30:96:30:79:38) Internet Protocol, Src: 192.168.1.1 (192.168.1.1), Dst: 139.15.251.239 (139.15.251.239) Transmission Control Protocol, Src Port: 51948 (51948), Dst Port: httpd (80), Seq: 0, Ack: 0, Len: 499 Hypertext Transfer Protocol [Packet size limited during capture: HTTP truncated] No. Time Source Destination Protocol Info 2 0.014923 139.15.251.239 192.168.1.1 TCP httpd > 51948 [ACK] Seq=0 Ack=499 Win=16560 Len=0 TSV=861450 TSER=109199 Frame 2 (66 bytes on wire, 66 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 0, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 3 0.020241 139.15.251.239 192.168.1.1 HTTP HTTP/1.1 200 OK[Packet size limited during capture] Frame 3 (590 bytes on wire, 96 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 0, Ack: 499, Len: 524 Hypertext Transfer Protocol [Packet size limited during capture: HTTP truncated] No. Time Source Destination Protocol Info 4 0.020345 192.168.1.1 139.15.251.239 TCP 51948 > httpd [ACK] Seq=499 Ack=524 Win=134 Len=0 TSV=109204 TSER=861450 Frame 4 (66 bytes on wire, 66 bytes captured) Ethernet II, Src: DellComp_a6:e5:65 (00:06:5b:a6:e5:65), Dst: Cisco_30:79:38 (00:30:96:30:79:38) Internet Protocol, Src: 192.168.1.1 (192.168.1.1), Dst: 139.15.251.239 (139.15.251.239) Transmission Control Protocol, Src Port: 51948 (51948), Dst Port: httpd (80), Seq: 499, Ack: 524, Len: 0 No. Time Source Destination Protocol Info 5 0.020258 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#1] httpd > 51948 [ACK] Seq=524 Ack=499 Win=16560 Len=0 Frame 5 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 524, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 6 0.020267 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#2] [TCP Previous segment lost] httpd > 51948 [ACK] Seq=1048 Ack=499 Win=16560 Len=0 Frame 6 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 1048, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 7 0.029010 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#3] [TCP Previous segment lost] httpd > 51948 [ACK] Seq=1572 Ack=499 Win=16560 Len=0 Frame 7 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 1572, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 8 0.256444 139.15.251.239 192.168.1.1 HTTP [TCP Retransmission] Continuation or non-HTTP traffic Frame 8 (590 bytes on wire, 96 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 524, Ack: 499, Len: 524 Hypertext Transfer Protocol [Packet size limited during capture: HTTP truncated] No. Time Source Destination Protocol Info 9 0.256557 192.168.1.1 139.15.251.239 TCP 51948 > httpd [ACK] Seq=499 Ack=1048 Win=138 Len=0 TSV=109263 TSER=861453 Frame 9 (66 bytes on wire, 66 bytes captured) Ethernet II, Src: DellComp_a6:e5:65 (00:06:5b:a6:e5:65), Dst: Cisco_30:79:38 (00:30:96:30:79:38) Internet Protocol, Src: 192.168.1.1 (192.168.1.1), Dst: 139.15.251.239 (139.15.251.239) Transmission Control Protocol, Src Port: 51948 (51948), Dst Port: httpd (80), Seq: 499, Ack: 1048, Len: 0 No. Time Source Destination Protocol Info 10 0.270561 139.15.251.239 192.168.1.1 HTTP [TCP Retransmission] Continuation or non-HTTP traffic Frame 10 (590 bytes on wire, 96 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 1048, Ack: 499, Len: 524 Hypertext Transfer Protocol [Packet size limited during capture: HTTP truncated] No. Time Source Destination Protocol Info 11 0.270680 192.168.1.1 139.15.251.239 TCP 51948 > httpd [ACK] Seq=499 Ack=1572 Win=142 Len=0 TSV=109267 TSER=861453 Frame 11 (66 bytes on wire, 66 bytes captured) Ethernet II, Src: DellComp_a6:e5:65 (00:06:5b:a6:e5:65), Dst: Cisco_30:79:38 (00:30:96:30:79:38) Internet Protocol, Src: 192.168.1.1 (192.168.1.1), Dst: 139.15.251.239 (139.15.251.239) Transmission Control Protocol, Src Port: 51948 (51948), Dst Port: httpd (80), Seq: 499, Ack: 1572, Len: 0 No. Time Source Destination Protocol Info 12 0.270596 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#4] httpd > 51948 [ACK] Seq=1572 Ack=499 Win=16560 Len=0 Frame 12 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 1572, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 13 0.282670 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#5] [TCP Previous segment lost] httpd > 51948 [ACK] Seq=2096 Ack=499 Win=16560 Len=0 Frame 13 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 2096, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 14 0.282787 139.15.251.239 192.168.1.1 TCP [TCP Dup ACK 2#6] [TCP Previous segment lost] httpd > 51948 [ACK] Seq=2620 Ack=499 Win=16560 Len=0 Frame 14 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 2620, Ack: 499, Len: 0 No. Time Source Destination Protocol Info 15 0.580637 139.15.251.239 192.168.1.1 HTTP [TCP Retransmission] Continuation or non-HTTP traffic Frame 15 (590 bytes on wire, 96 bytes captured) Ethernet II, Src: Cisco_1e:21:ec (00:0f:24:1e:21:ec), Dst: DellComp_a6:e5:65 (00:06:5b:a6:e5:65) Internet Protocol, Src: 139.15.251.239 (139.15.251.239), Dst: 192.168.1.1 (192.168.1.1) Transmission Control Protocol, Src Port: httpd (80), Dst Port: 51948 (51948), Seq: 1572, Ack: 499, Len: 524 Hypertext Transfer Protocol [Packet size limited during capture: HTTP truncated] - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
