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Is there a way to auto detect a network card?

Red Squirrel

Red Squirrel

No Lifer
Did some major storage related changes and I have to rebuild all my VMs because virtualbox sucks when it comes to physically moving vms due to the way it "registers" them in the system. By doing that the VMs are no longer detecting the nic as the new one probably has a different GUID or w/e.

Is there anything I can do to force it to auto detect? Currently if I do ifup eth0 it just says the nic does not exist. Typically in these situations whether it's a VM or physical I had to reinstall, but I'm hoping I can avoid that as some of these VMs have rather complex config that I would not want to go through doing again, such as openvpn.
 
CentOS 6. Have a couple Debian ones as well. Though I only really use the one CentOS 6 one that I can't get to work. The others are windows and came up ok. Host is Fedora Core 9.
 
I got it, managed to find something on Google, had to delete the file:

/etc/udev/rules.d/70-persistent-net.rules

Then reboot, and it redetected everything. Had to update the mac address in the ifcfg file as well, then do ifdown and ifup. (did not work before I did that, a simple network restart did not do the trick)
 
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