[Bug 93206] [feisty] can not surf to some sites

[Jos Dehaes]

Public bug reported:

Binary package hint: linux-image-generic

I frequently use the belgian site www.verkeerscentrum.be. I can no
longer access it from within feisty. I have tried firefox, epiphany,
wget, all without success. With another machine that is still running
edgy has no problems connecting. This appears to be a TCP/IP problem
(kernel?).

A sniff with tcpdump reveals the following (tried to get the index page of said site with wget):
Feisty:
jos at duet-feisty ~ $ sudo tcpdump -i eth1 port 80
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 96 bytes
21:48:48.218219 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: S 3485545750:3485545750(0) win 5840 <mss 1460,sackOK,timestamp 29689296 0,nop,wscale 5>
21:48:48.244487 IP www.verkeerscentrum.be.www > duet.sourcery.be.43786: S 1471224515:1471224515(0) ack 3485545751 win 5840 <mss 1460,nop,nop,sackOK,nop,wscale 0>
21:48:48.244553 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: . ack 1 win 183
21:48:48.244828 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: P 1:111(110) ack 1 win 183
21:48:48.272990 IP www.verkeerscentrum.be.www > duet.sourcery.be.43786: . ack 111 win 5840
21:49:31.852600 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: F 111:111(0) ack 1 win 183
21:49:32.077865 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: F 111:111(0) ack 1 win 183
21:49:32.533896 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: F 111:111(0) ack 1 win 183
21:49:33.446141 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: F 111:111(0) ack 1 win 183
21:49:35.270051 IP duet.sourcery.be.43786 > www.verkeerscentrum.be.www: F 111:111(0) ack 1 win 183

10 packets captured
11 packets received by filter
0 packets dropped by kernel


With edgy immideately after this:
jos at quattro:~$ tcpdump port 80
tcpdump: no suitable device found
jos at quattro:~$ sudo tcpdump -i eth0 port 80
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
21:50:13.861782 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: S 1247540388:1247540388(0) win 5840 <mss 1460,sackOK,timestamp 475837292 0,nop,wscale 2>
21:50:13.902859 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: S 2302521251:2302521251(0) ack 1247540389 win 5840 <mss 1460,nop,nop,sackOK,nop,wscale 0>
21:50:13.902884 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 1 win 1460
21:50:13.903005 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: P 1:111(110) ack 1 win 1460
21:50:13.930066 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . ack 111 win 5840
21:50:13.936643 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 1:582(581) ack 111 win 5840
21:50:13.936676 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 582 win 1751
21:50:13.946610 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: P 111:245(134) ack 582 win 1751
21:50:14.005304 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . ack 245 win 5840
21:50:14.033681 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . 582:2042(1460) ack 245 win 5840
21:50:14.074401 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 2042 win 2481
21:50:14.327453 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 2042:3502(1460) ack 245 win 5840
21:50:14.327483 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 3502 win 3211
21:50:14.356874 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . 3502:4962(1460) ack 245 win 5840
21:50:14.356901 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 4962 win 3941
21:50:14.357582 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 4962:6422(1460) ack 245 win 5840
21:50:14.357593 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 6422 win 4671
21:50:14.380247 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . 6422:7882(1460) ack 245 win 5840
21:50:14.380275 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 7882 win 5401
21:50:14.637695 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 7882:9342(1460) ack 245 win 5840
21:50:14.637722 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 9342 win 6131
21:50:14.638362 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 9342:10802(1460) ack 245 win 5840
21:50:14.638369 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 10802 win 6861
21:50:14.641127 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . 10802:12262(1460) ack 245 win 5840
21:50:14.641140 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 12262 win 7591
21:50:14.669202 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 9342:10802(1460) ack 245 win 5840
21:50:14.669233 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 12262 win 7591 <nop,nop,sack 1 {9342:10802}>
21:50:14.669862 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: . 10802:12262(1460) ack 245 win 5840
21:50:14.669874 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 12262 win 7591 <nop,nop,sack 1 {10802:12262}>
21:50:14.676198 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: P 12262:12807(545) ack 245 win 5840
21:50:14.676226 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 12807 win 8321
21:50:14.676570 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: F 245:245(0) ack 12807 win 8321
21:50:14.707009 IP www.verkeerscentrum.be.www > quattro.sourcery.be.39435: F 12807:12807(0) ack 246 win 5840
21:50:14.707044 IP quattro.sourcery.be.39435 > www.verkeerscentrum.be.www: . ack 12808 win 8321

34 packets captured
68 packets received by filter
0 packets dropped by kernel
jos at quattro:~$

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
[feisty] can not surf to some sites
https://launchpad.net/bugs/93206