My basic problem is that the DHCP I'm running via Apple Server (Mavericks) on a mini isn't releasing IPs to new systems. Every new system (like a visitor's iPhone) has to be entered as a static connection. I've got an overly-complicated setup, with a COMCAST cablemodem/router (an SMCD3GNV) that is supposed to be in bridge mode to a LinkSys router (LRT214). DHCP has been disabled on the LinkSys, but it's active on the COMCAST beast and there appears to be no way to shut it off via the web interface (!!!). As a side issues, the WiFi on the COMCAST box is also enabled, which I also don't want running and cannot turn off. I think my first question is whether the COMCAST box should be running DHCP or WiFi if it's in bridge mode, with a follow-up of how to shut down DHCP and WiFi on it if they can run in bridge mode. (I still have the COMCAST box because I get phone service through it as well). If the COMCAST box behavior shouldn't be messing up the DHCP behavior on the mini server, any ideas as to what's going on there? When I first set this up it connected fine to four devices. Those are still showing as dynamic IP assignments, but it won't connect any more up via dynamic IP assignment.