A few hours ago all my home networked PCs and Macs were working fine and accessing the internet. Now, one Mac can’t see anything on the internet, but it can see the cable modem pages which all say everything is fine. The other computers can see the internet as usual. Non-browser services on this Mac have also stopped working. I tried rebooting it but still the same. The connection from Mac to cable modem is obviously fine, as I can see the modem.
Any idea what gives?