[Bug 109764] First connection attempts usually fail

Rocco Stanzione grasshopper at linuxkungfu.org
Tue Apr 24 21:07:40 UTC 2007


Public bug reported:

For any TCP connection (http, ftp, ssh...), the first connection attempt almost always fails, and the second and subsequent attempts almost always succeed.  The ssh error message is "Resource temporarily unavailable".  In Firefox, sometimes it will say the connection was reset, sometimes it will just fail to download a stylesheet or image.  Apt-get update looks like this:
Cannot initiate the connection to archive.ubuntu.com:80 (91.189.88.42). - connect (11 Resource temporarily unavailable) [IP: 91.189.88.42 80]
This happens with the newest lowlatency kernels in Feisty.  I can't say for sure which build introduced it, as I skipped several kernel updates without rebooting.  It may have been introduced in a pre-release kernel.  Some googling reinforced my suspicion that it's a kernel issue, including this faq:
http://www.faqs.org/faqs/computer-security/ssh-faq/
which blames that error message in Solaris on a Solaris kernel bug.  I don't have a non-lowlatency kernel installed at the moment, but if I get time I'll install one and report whether I have the same bug.

There are no corresponding log entries in dmesg, /var/log/messages,
/var/log/syslog etc.

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

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First connection attempts usually fail
https://bugs.launchpad.net/bugs/109764
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