FC2 - Strange Ethernet Behavior

John Krische john at sysop.com
Wed Aug 18 16:54:45 UTC 2004


James:

Yes, these are FC2 kernels, v 2.6.7 something, 494 I think.  Thanks for 
the idea, but for reasons of our own I need to keep these servers on 
"stock" packages, updates & such from official fedora sources.  company 
policy and all.  If it were a machine at home, I'd compile kernel source 
in a heartbeat.

I'll have some tethereal output for y'all in just a minute.  Test: 
download webmin's tgz from the UMN mirror (or any mirror if UMN is 
unreachable).  Just noticed something - a bunch of DUP ACK entries from 
my local box to the one I'm DL'ing from, and I noticed that the download 
starts with [TCP ZeroWindow].  I'm going to test this against a local 
LAN file transfer and see if the same behavior exists.  Back in a bit.

On the /var/log/messages output, I'm seeing 2 things I haven't seen 
before that may be relevant.  Eth0 (single nic machine) keeps jumping in 
& out of promiscuous mode - don't know if that's normal or not.  #2 is 
that many entries have a timestamp that is exactly 5 hours ahead of 
local time, ie, ahead of all other entries (GMT format maybe?  I'm in 
CDT).  All such entries are dns lookups.  could be normal behavior, I 
don't know.



James Wilkinson wrote:

> John Krische wrote:
> 
> Are you running FC2 kernels? What happens if you compile one from
> kernel.org and try that?
> 
> James.
> 

-- 
John K.





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