I'm attempting to set up a mac mini server (brand new, Yosemite 10.10.1) on our network at the office. We have an unmanaged 16 port switch that runs out to all of our workstations and a couple of WAPs that I'd like to run as just WAPs. Mac Mini has a Pegasus2 for backups, etc. I'd like to run VPN, DHCP, DNS, Time Machine, and OpenDirectory off this machine. I have the WAPs in bridge mode. Do I need to use a Thunderbolt Ethernet adapter to get 2 interfaces in order to run this as a DHCP server to the entire network? I tried to plug all of the workstations, the modem, the mini, and the WAPs into the switch and was never able to pull NAT'd addresses off the Mac Mini, just public IPs. What am I missing?