Why would you configure 2 virtual network interfaces in a VM?
Because the system I'm simulating is dual homed. One NIC facing the corporate network and the other an isolated, unrouted VLAN.
There are (or rather, will be) other VMs that exist only on the Host-Only Network, and the hosts "host-only" interface is usually shutdown, enabled only for troubleshooting (Which is why it's host-only and not 'Internal network'
Multiple network interfaces are always a special configuration and need your attention. Use the bootcode nodhcp and configure your networks in bootlocal.sh.
Forgive my ignorance, but is it possible to still leave DHCP enabled on one interface?
All this though doesn't explain why the system works *perfectly* when booting from CorePlus CD, and only fails once installed.