Lan connection problem -

I have a problem that began about a week ago and keeps distracting me from other computer problems and I am beginning to think it may be related to a dnf update. I can work around the problem by having my router powered from a UPS and being careful not to reboot the router. Once the router reboots the various wireless devices I have, printer, video cameras, etc. need their ac power "recycled" to get them connected to the LAN again. Very inconvenient at this time of year since some of these devices are in another building ... When this happens I can not ping those devices, normally I should be able to connect to the cameras with the browser and reboot them when some glitch occurs but now when I lose the LAN connection I have to visit them and pull the plug. The printer is near at hand and toggling the power switch gets it back on. The problem is manifest on three updated Fedora-23 computers and I have replaced the router to no avail. What do I need to look at? Bob -- Bob Goodwin - Zuni, Virginia, USA http://www.qrz.com/db/W2BOD box10 FEDORA-23/64bit LINUX XFCE POP3