trying to follow this guide. http://www.ubuntu.com/download/cloud/install-ubuntu-openstack
changes made to network interfaces in the web console have no effect in the underlying files. Selecting DHCP and DNS and specifying the range doesn't build a scope in /etc/dhcp/dhcpd.conf
setting up eth0, 1, 2 make no changes to the underlying /etc/network/interfaces file.
The guide stops working for me at step 3:
Fill in the other details, like gateway and DNS, in the networks that were auto-created for each NIC.
Unfortunately it didn't autocreate any interfaces for my NICs.