Argh. Been Fighting with my router an cable modem - apparently Cox did some work in the area last night. Cable Modem was back up for 9 hours as of an hour ago, and router had obtained its IP address, but no device connected to the router was getting Internet access. I have my router set up to force assign particular IP addresses to the devices that I have in my house, including all cell phones, tablets, laptops, desktop, security systems, etc., and everything had its host-assigned IP address.
Oddest thing in the world. Even rebooting the router was not helping.
Enabling QoS on the router did the trick. No idea why, but I disabled it again and everything still works.
Sheesh. Now back to football Sunday.