[BlueOnyx:12643] Urgent Hyper-V problem - please help :-)

[blueonyx at larsi.de]

Hello,

I did a yum update on a customers server and after that there is no network connection.

I read all the issues with hyper-v and sometime ago Michael noticed a problem with irqbalancing on this server. But this time "service irqbalancing stop" did not change anything.

All solutions point me to boot an older kernel, but I can't do this. Everytime I boot the machine, it allways go to the last kernel and changing the grub.conf only results in a broken server, which won't boot anymore.

Does anyone has an idea for me? I can boot the server in kernel 2.6.32-279.5.1.el6.i686.

Thanks in advance.
Lars.
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