Multihomed pc

[Crisfalusi Dan]

I have pc's that move from time to time in a relative large network (with tens of routers).
In the network they all receive their IP address from a central dhcp server.
For security reasons all pc's have a fix mac-ip association.
My problem is that I don't know how to change the association of mac-ip from dhcpd.conf file
automatically not by hand (using some match and if statements), based on giaddr (the IP of the first entry router).
Can somebody help me ?

Thanks.