Mac troubleshooting: What to do when you can't connect to the Internet
Posted 25 February 2013 - 05:20 AM
What about IPv6 ? For those of us who are fortunate enough to have a modern Internet provider worthy of the 21st century :-)
Guys, sites are now more and more using IPv6 (ipv6.google.com for example, sometimes a lot faster !), so you should also verify your connectivity using this protocol. There are loads of test servers out there that can verify this. This one for example : http://www.test-ipv6.com/
Furthermore, OpenDNS provides IPv6 DNS servers too.
Your list of DNS Servers, should be the following :
or if your prefer using IPv6 :
Posted 25 February 2013 - 08:39 AM
Posted 25 February 2013 - 08:41 AM
Posted 25 February 2013 - 10:58 AM
If you can get a 404 error, you do not have an Internet connection problem. 404 errors are generated server-side; if you can see one, your connection and DNS are fine.
Posted 25 February 2013 - 12:38 PM
Posted 25 February 2013 - 04:33 PM
Posted 25 February 2013 - 05:38 PM
I'm not fortunate enough to have such a provider :-(. (But they say they'll be rolling out preliminary support in 2013.)
I suspect that at the moment, very few people having trouble connecting to the Internet can blame IPv6 problems, but that could be much more true in a few years.
Posted 01 March 2013 - 06:32 AM
sudo ifconfig en0 down
sudo sleep 10
sudo ifconfig en0 up
This seems to be the only reliable way of restoring the connection (short of doing a restart) under such circumstances.
Posted 01 March 2013 - 11:28 AM
If, for example, a user in Dallas connects via Comcast, the user will be connected to an East Coast server whose location Comcast never discloses. If that user uses OpenDNS, the user will be connected via anycast routing to a server in Dallas.
Most any OpenDNS user should be able to debunk claims of slow website access, buffering videos, and so on. Users can and do switch to OpenDNS to improve performance on a permanent basis.