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Old 5th September 2010, 16:05
VHSOLUTION VHSOLUTION is offline
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Default XEN and Mac Address

Hello everyone,

I have some problem by using XEN kernel on Centos 5.x. I've tried to make XEN based vms on three of my dedis in a german DC and each time after the Xen kernel was installed, the mac address of eth0 has been changed to FE:FF:FF.FF.FF.FF and after reboot the server couldn't be reached via SSH. I found out this via KVM and manually reset the mac-address to the original. The question is how can I prevent this from happening without the help of KVM?

Any help will be much appreciated

Last edited by VHSOLUTION; 5th September 2010 at 16:07.
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Old 6th September 2010, 14:18
Mark_NL Mark_NL is offline
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You should add a mac address to the config file of your VM

somewhere you defined:

vif = [ 'ip=1.2.3.4,mac=00:01:02:03:04:05' ]
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Old 6th September 2010, 14:40
VHSOLUTION VHSOLUTION is offline
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Quote:
Originally Posted by Mark_NL View Post
You should add a mac address to the config file of your VM

somewhere you defined:

vif = [ 'ip=1.2.3.4,mac=00:01:02:03:04:05' ]
Hi, many thanks for the nice reply. The problem started even before I created any VM. I simply used "yum groupinstall" to get the XEN kernel and changed the grub.conf to start with "0". After reboot, I found out that the eth0 has been changed to "FE:FF:FF.FF.FF.FF".
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