[cobbler] custom hw_detect script not working due to biosdevname

Hi All, We have been using cobbler to provision servers for a few weeks now on hp hardware without any issues. We just got one dell server and all of a sudden my networking is screwed up and looks like it is due to how dell servers behave due to the biosdevname package by default. On the dell server my interface is setup as em1 instead of eth0 and this is what I am doing in one of my cobbler snippets that is now broken due to me looking explicitly for eth0: -- $ cat centos66/hw-detect #set $mac = $getVar('$mac_address_eth0') #if $mac #set $mac_prefix = $mac[0:8] #if $mac_prefix == "00:0c:29" or $mac_prefix == "00:05:69" or $mac_prefix == "00:50:56" #set global $machinetype='virtual' #else #set global $machinetype='physical' #end if #end if -- This is just a quick way for me to detect if it is a virtual or physical machine. How can I test for the existence of em1 instead? So basically it would check eth0 if that is what is being defined by the user or em1 if that is what is being added on the "cobbler system add" command. I tried just using $getVar("mac_address") but that does not seem to work. Any help would be greatly appreciated. Thanks!