Originally Posted By: drakino
Rebooting the router, and connectivity came back. My best guess is some weird DHCP issue, though I didn't try a static IP assignment to fully verify. The notebook never fell back to a self assigned IPv4 address, even after 10 minutes.

My old Hawking router use to do that about once a week or every other week, usually to my main PC. That was the primary reason I got rid of it.