New answers tagged networking
Summing up from the comments: There are several things which could be tried: switching to a different WiFi channel (as suggested by Aadi already) shortly switch to Airplane mode and back reboot the device wait it out (I had a similar case where it automatically solved after 30+ minutes, but the Airplane trick didn't help) factory-reset the device ...
It seems to be a known "feature" if you use Kaspersky Internet Security: http://forum.kaspersky.com/index.php?s=8ffe1c0b8684d5bd3d1353f0d074f528&showtopic=260035 However, as you can see in the link above, it comes with a few issues. Disabling the 'web protection' component seems to do the trick.
There might be an issue with the wifi channels enabled on your phone, I am unable to find this setting on kitkat i have no clue why! Maybe I just dont remember how to get there, go on to your router settings page and see the channel being used. Change it and I think that would fix the issue.
Use the bluestacks help in all apps, then when you launch it select the default android browser app. Works great :)
No, as of late 2013, even the newest Android devices still don't support IPv6-only WiFi networks. Source: http://code.google.com/p/android/issues/detail?id=32630
I don't know if it will help but give a shot to Airdroid, it let's you transfer files from android device to pc, connected over the same network back and forth. If the problem is not so complicated, this thing will handle it.
Did you check with netcfg within Android that both are really up? If, e.g., eth1 is down, enable it with netcfg eth1 dhcp up.
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