I have a strange problem when using Centos: When using a Xen kernel (it does not matter whether a guest is started or not) networking fails is flakey. ssl connections fail, ping reports a wrong data byte #50 .....
I am using a Sun quad ethernet card, but when I tried the gigabit Ethernet on the motherboard, I do not get the error reports from ping, but many missing replies instead. The behaviour is somewhat intermittent. But now I am using a non-Xen kernel I have no problems. there is nothing logged in /var/log/messages.
I had to patch the kernel due to some missing initialisation in the sun hme driver, but as said above there are errors on other cards as well. I am probably overlooking something obvious, but hours of googling have not given any results.
Any hints anybody?
Louis