* Then go to the Setup --> Apps --> Servers

* Once there, find the DHCP Server and unselect both "Watchdog. DHCP Server is being monitored 24x7" and "Start at Boot time"

Here are the [http://www.amahi.org/faq#is-dhcp-server-required DHCP tradeoffs] if you would like to only use some of the functionality.

In short, a few of the nicer features of your HDA will not be available. You can still point your machines to the DNS server in the HDA and get some of the benefits, like nice URLs for your HDA-provided services. This is not a supported configuration for things like [[Netboot]].