Thanks, all lights were green on the Sonic modem I think, but I will check again next time. The router showed internet connection light as problem. But only had to power cycle the Sonic modem to restore service. If it happens again I'll call tech support.
Resetting the Sonic equipment will cause link on your own router to go down and then come back up, and it'll try to obtain an IP, etc. You might instead try just rebooting your own equipment rather than the Sonic gear, or just unplug and re-plug the Ethernet. One big risk with customer-provided equipment is plugging into the LAN side, or to a switch rather than router. You'll use up all of the IPs available to you real quickly and it can be quite a mystery. Our bridge must be connected to the WAN port on a router.