Admittedly this is a tad bizarre but....

Dom0 host running RHEL 5.1 fully updated
DomU1 & DomU2 running RHEL 4.6 fully updated.

In doing some testing I noticed that I can't ssh between the 2 DomUs on the same machine. After a little creative Giggling I found that if I do the following on the DomUs

ethtool -K eth0 tx off

It fixes the issue. My question is what might break if I keep the TCP checksumming offloaded?

Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 10) on the DomO



Tony Placilla <aplacilla@(protected)>

The Sheridan Libraries
Johns Hopkins University





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