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Full Discussion: IPV6 very slow, not respecting MTU??
Special Forums IP Networking IPV6 very slow, not respecting MTU?? Post 302564419 by jusme on Thursday 13th of October 2011 03:19:30 PM
Old 10-13-2011
Question IPV6 very slow, not respecting MTU??
Hi,

Curious problem with IPV6. Situation is wget request from squid proxy via intermediate router. With IPV4 (wget -4) speed is ~100MB/sec. With IPV6 (wget -6) it drops to 30KB/sec.

Examining the traffic with tcpdump shows that the squid box is regularly sending out over-sized packets (>MTU) and receiving "ICMP6 packet too big" responses from the router. It then behaves for a few packets before trying it on again. With IPV4 it never sends an oversize packet (same route over same interfaces).

Any suggestions where to poke appreciated!


Some configuration details:

Code:
# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:0C:29:80:23:32  
          inet addr:192.168.1.228  Bcast:192.168.1.255  Mask:255.255.255.224
          inet6 addr: fd01:0:0:5::228/64 Scope:Global
          inet6 addr: fe80::20c:29ff:fe80:2332/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:35761 errors:0 dropped:0 overruns:0 frame:0
          TX packets:61105 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6665731 (6.3 MiB)  TX bytes:79820556 (76.1 MiB)

All platforms are Centos 6.0 on VMware ESXi 4.1, using the vmxnet3 driver.

All offload is disabled (had issues with this on the vmxnet3 driver before) :

Code:
# /sbin/ethtool -k eth1
Offload parameters for eth1:
rx-checksumming: off
tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: off
generic-receive-offload: off
large-receive-offload: off


tcpdump extract - IPv6:

Code:
19:20:46.404077 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [S], seq 2248635961, win 5760, options [mss 1440,sackOK,TS val 10748669 ecr 0,nop,wscale 6], length 0
19:20:46.404097 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [S.], seq 912987542, ack 2248635962, win 5712, options [mss 1440,sackOK,TS val 3826645070 ecr 10748669,nop,wscale 6], length 0
19:20:46.405102 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 1, win 90, options [nop,nop,TS val 10748671 ecr 3826645070], length 0
19:20:46.405168 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [P.], seq 1:246, ack 1, win 90, options [nop,nop,TS val 10748671 ecr 3826645070], length 245
19:20:46.405177 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], ack 246, win 106, options [nop,nop,TS val 3826645071 ecr 10748671], length 0
19:20:46.405568 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 1:2857, ack 246, win 106, options [nop,nop,TS val 3826645071 ecr 10748671], length 2856
19:20:46.409916 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [P.], seq 2857:3993, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748671], length 1136
19:20:46.409984 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240
19:20:46.410069 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 1, win 90, options [nop,nop,TS val 10748676 ecr 3826645071,nop,nop,sack 1 {2857:3993}], length 0
19:20:46.410091 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 3993:5421, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410187 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 1, win 90, options [nop,nop,TS val 10748676 ecr 3826645071,nop,nop,sack 1 {2857:5421}], length 0
19:20:46.410199 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 1:1429, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410294 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 1429, win 135, options [nop,nop,TS val 10748676 ecr 3826645076,nop,nop,sack 1 {2857:5421}], length 0
19:20:46.410304 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 5421:6849, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410390 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 1429, win 135, options [nop,nop,TS val 10748676 ecr 3826645076,nop,nop,sack 1 {2857:6849}], length 0
19:20:46.410401 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 1429:2857, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410489 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 6849, win 180, options [nop,nop,TS val 10748676 ecr 3826645076], length 0
19:20:46.410500 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 6849:8277, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410586 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 8277, win 224, options [nop,nop,TS val 10748676 ecr 3826645076], length 0
19:20:46.410597 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 8277:9705, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410606 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 9705:11133, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 1428
19:20:46.410713 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 9705, win 269, options [nop,nop,TS val 10748676 ecr 3826645076], length 0
19:20:46.410725 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 11133:13989, ack 246, win 106, options [nop,nop,TS val 3826645076 ecr 10748676], length 2856
19:20:46.416490 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 11133, win 314, options [nop,nop,TS val 10748676 ecr 3826645076], length 0
19:20:46.416506 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 13989:15417, ack 246, win 106, options [nop,nop,TS val 3826645082 ecr 10748676], length 1428
19:20:46.416554 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240
19:20:46.416629 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 11133, win 314, options [nop,nop,TS val 10748682 ecr 3826645076,nop,nop,sack 1 {13989:15417}], length 0
19:20:46.416637 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 15417:16845, ack 246, win 106, options [nop,nop,TS val 3826645082 ecr 10748682], length 1428
19:20:46.416729 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 11133, win 314, options [nop,nop,TS val 10748682 ecr 3826645076,nop,nop,sack 1 {13989:16845}], length 0
19:20:46.416741 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 16845:18273, ack 246, win 106, options [nop,nop,TS val 3826645082 ecr 10748682], length 1428
19:20:46.416817 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 11133, win 314, options [nop,nop,TS val 10748682 ecr 3826645076,nop,nop,sack 1 {13989:18273}], length 0
19:20:46.416830 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 11133:12561, ack 246, win 106, options [nop,nop,TS val 3826645083 ecr 10748682], length 1428
19:20:46.416907 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 12561, win 358, options [nop,nop,TS val 10748683 ecr 3826645083,nop,nop,sack 1 {13989:18273}], length 0
19:20:46.416917 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 12561:13989, ack 246, win 106, options [nop,nop,TS val 3826645083 ecr 10748683], length 1428
19:20:46.417059 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 18273, win 403, options [nop,nop,TS val 10748683 ecr 3826645083], length 0
19:20:46.417070 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 18273:19701, ack 246, win 106, options [nop,nop,TS val 3826645083 ecr 10748683], length 1428
19:20:46.417251 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 19701, win 447, options [nop,nop,TS val 10748683 ecr 3826645083], length 0
19:20:46.417261 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 19701:22557, ack 246, win 106, options [nop,nop,TS val 3826645083 ecr 10748683], length 2856
19:20:46.422347 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240
19:20:46.623094 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 19701:21129, ack 246, win 106, options [nop,nop,TS val 3826645289 ecr 10748683], length 1428
19:20:46.623288 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 21129, win 492, options [nop,nop,TS val 10748889 ecr 3826645289], length 0
19:20:46.623309 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 22557:25413, ack 246, win 106, options [nop,nop,TS val 3826645289 ecr 10748889], length 2856
19:20:46.628608 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240
19:20:46.823830 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 21129:22557, ack 246, win 106, options [nop,nop,TS val 3826645490 ecr 10748889], length 1428
19:20:46.824019 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 22557, win 537, options [nop,nop,TS val 10749089 ecr 3826645490], length 0
19:20:46.824037 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 22557:23985, ack 246, win 106, options [nop,nop,TS val 3826645490 ecr 10749089], length 1428
19:20:46.824057 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 23985:25413, ack 246, win 106, options [nop,nop,TS val 3826645490 ecr 10749089], length 1428
19:20:46.824141 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 23985, win 581, options [nop,nop,TS val 10749090 ecr 3826645490], length 0
19:20:46.824155 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 25413:28269, ack 246, win 106, options [nop,nop,TS val 3826645490 ecr 10749090], length 2856
19:20:46.830031 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 25413, win 626, options [nop,nop,TS val 10749090 ecr 3826645490], length 0
19:20:46.830042 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 28269:29697, ack 246, win 106, options [nop,nop,TS val 3826645490 ecr 10749090], length 1428
19:20:46.830080 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240
19:20:46.830164 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 25413, win 626, options [nop,nop,TS val 10749096 ecr 3826645490,nop,nop,sack 1 {28269:29697}], length 0
19:20:46.830175 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 29697:31125, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 1428
19:20:46.830263 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 25413, win 626, options [nop,nop,TS val 10749096 ecr 3826645490,nop,nop,sack 1 {28269:31125}], length 0
19:20:46.830273 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 31125:32553, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 1428
19:20:46.830366 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 25413, win 626, options [nop,nop,TS val 10749096 ecr 3826645490,nop,nop,sack 1 {28269:32553}], length 0
19:20:46.830380 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 25413:26841, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 1428
19:20:46.830484 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 26841, win 671, options [nop,nop,TS val 10749096 ecr 3826645496,nop,nop,sack 1 {28269:32553}], length 0
19:20:46.830496 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 26841:28269, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 1428
19:20:46.830595 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 32553, win 715, options [nop,nop,TS val 10749096 ecr 3826645496], length 0
19:20:46.830607 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 32553:33981, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 1428
19:20:46.830703 IP6 fd01:0:0:6::195.44083 > fd01:0:0:5::228.squid: Flags [.], ack 33981, win 760, options [nop,nop,TS val 10749096 ecr 3826645496], length 0
19:20:46.830713 IP6 fd01:0:0:5::228.squid > fd01:0:0:6::195.44083: Flags [.], seq 33981:36837, ack 246, win 106, options [nop,nop,TS val 3826645496 ecr 10749096], length 2856
19:20:46.835516 IP6 fd01:0:0:5::225 > fd01:0:0:5::228: ICMP6, packet too big, mtu 1500, length 1240

And with IPV4:

Code:
19:20:04.859626 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [S], seq 1535516733, win 5840, options [mss 1460,sackOK,TS val 10707125 ecr 0,nop,wscale 6], length 0
19:20:04.859651 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [S.], seq 193718998, ack 1535516734, win 5792, options [mss 1460,sackOK,TS val 3826603525 ecr 10707125,nop,wscale 6], length 0
19:20:04.859740 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 1, win 92, options [nop,nop,TS val 10707125 ecr 3826603525], length 0
19:20:04.859796 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [P.], seq 1:246, ack 1, win 92, options [nop,nop,TS val 10707125 ecr 3826603525], length 245
19:20:04.859803 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], ack 246, win 108, options [nop,nop,TS val 3826603525 ecr 10707125], length 0
19:20:04.860226 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 1:1449, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707125], length 1448
19:20:04.860237 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 1449:2897, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707125], length 1448
19:20:04.860239 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 2897:3993, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707125], length 1096
19:20:04.860328 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 1449, win 137, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860337 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 3993:5441, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860343 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 5441:6889, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860347 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 2897, win 182, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860350 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 6889:8089, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860354 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 3993, win 227, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860372 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 8089:9537, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860377 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 9537:10985, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860379 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 10985:12185, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860441 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 5441, win 273, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860461 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 6889, win 318, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860463 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 8089, win 363, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860464 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 9537, win 408, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860475 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 10985, win 454, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860484 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 12185:13633, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860491 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 13633:15081, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860493 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 15081:16281, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860506 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 12185, win 499, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860528 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 16281:17729, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860534 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 17729:19177, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860536 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 19177:20377, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860548 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 13633, win 544, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860569 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 20377:21825, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860575 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 21825:23273, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860583 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 15081, win 589, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860592 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 16281, win 635, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860597 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 23273:24473, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860621 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 24473:25921, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860627 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 25921:27369, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860629 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 27369:28569, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860640 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 17729, win 680, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860660 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 28569:30017, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860669 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 19177, win 725, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860677 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 30017:31465, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.860681 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 31465:32665, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1200
19:20:04.860728 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 20377, win 717, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860735 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 21825, win 696, options [nop,nop,TS val 10707126 ecr 3826603526], length 0
19:20:04.860748 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 32665:34113, ack 246, win 108, options [nop,nop,TS val 3826603526 ecr 10707126], length 1448
19:20:04.861122 IP 192.168.0.195.57674 > 192.168.1.228.squid: Flags [.], ack 40857, win 655, options [nop,nop,TS val 10707127 ecr 3826603526], length 0
19:20:04.861135 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 40857:42305, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 1448
19:20:04.861141 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 42305:43753, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 1448
19:20:04.861143 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 43753:45201, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 1448
19:20:04.861145 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 45201:46649, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 1448
19:20:04.861146 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [.], seq 46649:48097, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 1448
19:20:04.861148 IP 192.168.1.228.squid > 192.168.0.195.57674: Flags [P.], seq 48097:49049, ack 246, win 108, options [nop,nop,TS val 3826603527 ecr 10707127], length 952


TIA,
Ian.
Last edited by pludi; 10-14-2011 at 06:08 PM..
 

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