I recently setup the Plex plugin on my FreeNAS box. Shortly after I noticed that devices couldn't connect to my network. Everything with a static IP worked fine but everything that used DHCP couldn't get an IP. And in some cases it got an IP but on the wrong subnet.
I noticed the problem went away when I turned off the FreeNAS box. I also noticed that the devices that got an IP always got it on the same subnet as the Plex jail.
I opened a shell for the jail and started running tcpdump for port 67 and 68 and tried to connect a device using DHCP. And tcpdump showed that the Plex jail tried to respond to the request.
Is this really correct behaviour? Why would there be a DCHP server running in the Plex jail serving IP-addresses?
I'm running FreeNAS 11.3-U5.