multiple dhcp subnets on single machine?

view full story

http://www.linuxquestions.org – Hi all, i am find myself in need of building what amounts to 3 ip networks on 1 physical lan. first LAN is another companies network on the network a mix of pc's and equipment second is LAN new company network third network is an ip phone system for both i would like to use i am hoping to use the same dhcp server to do this, assigning address to the old company's 10. network via mac address reservation. any help would be greatful (HowTos)