In my office, nearly everybody uses Mac and we have just only one Windows 7 system. Just this morning, all the Mac systems (10.8.2) could not connect to the internet but could connect to the network, but the Windows 7 can reach the internet all connected to same switch.
When I tried pinging the DNS address, it replied but I can not ping
www.google.com on any of the Macs. If I try creating a new location for the network and enter all the details manually instead of autoConfig, it connects to the internet for like 30 seconds and then shuts off again. The connection still shows green afterall and could still ping the DNS.
I tried killing the
mDNSResponder but still same issue.
NB: We don't use any DNS/Mac Servers. We connect to the switch that connects directly to the router.