I am trying to connect a couple of devices via Ethernet to a Mac Mini acting as a server. The OS X Server app is running, DHCP is enabled, and this was working fine, but it doesn't seem to be working at all today.
The Mac Mini is running Server version 4.1 on OS X 10.10.4. I've connected each one of the devices to a Mac Mini which was sharing the connection via Ethernet, therefore assigning IP addresses, and this worked.
I've tried disabling and re-enabling DHCP on the Server app, then tried rebooting, but no joy.
How can I get DHCP working?