I am certain that noone ever reads forum entries before they reply to them. Please look back and see phrases like "installer supported configuration for 1 network card with DHCP server
" (I wish I had noticed the glow function before
Yes DHCP server is a primary part of the core that it needs in order to function correctly and yet there is the option to turn it off (and hence cripple the system). 2 nic cards is not a necessary part of the system - the only functionality I can see that running on 1 nic would limit is some mention of the QA capabilities to assign higher priority to the VOIP etc. My router and about 50% of modern home routers already do that if requested and many think that such QA rules are a waste of bandwidth anyhow (there certainly is an overhead).
The issues with the 2 nic mechanism have been mentioned at least twice each in this thread - the base issue is complexity: whether compexity in cabling (multiple cable runs or a switch in the living room), complexity in network design (wireless router
on the edge
of the home network will not allow wireless clients to participate), complexity of configuration (using bash and man iptables to manage more complex firewall configuration).
Life would be much easier if you could just disable to DHCP service on your existing router (or internal server) and drop your LMCE onto the network with a standard installation with 1 nic. Life would be good