this is my first message to the list. I've been playing around with cobbler for some time now and I'm starting to get deeper into it. I'm now dealing with network configuration parameters and I'd like to know if there is any way of creating the config files (ifcfg-XX files in my case, CentOS) without providing the MAC addresses in advance. 

I'll have to install a lot of systems and I do not have the MACs so I'd just want to write the right configurations to ifcfg-eth0, ifcfg-bond0, br0 eth without linking it to MACs.

Is there any way of achieving this? Of course I could write custom snippets for this, but if there is an standard solution would be better.

thanks in advance,

Ignacio,