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re: http://lists.graemef.net/pipermail/lvs-users/2009-December/022765.html
Just thought I would post an update to this since we saw the same symptoms
(including the frags from the tcpdump) and our solution might be helpful
to others.
Turning off generic-receive-offload fixed the problem for us.
# ethtool -k eth1
...snip
generic-receive-offload: on
# ethtool -K eth1 gro off
...snip
generic-receive-offload: off
The network card on the director:
Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
OS and kernel:
CentOS release 5.5 (Final)
Linux 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64
x86_64 GNU/Linux
thanks
-k
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