Version: (using KDE 4.3.1) OS: Linux Installed from: openSUSE RPMs When using a Proxy for internet access, the "No proxy for" setting is not useful. It seems you can only add hostnames that will be matched and IP-adresses, but not IP-networks. All other proxy-aware programs work just fine with a no_proxy="10.0.0.0/8" environment, but KDE does not. With a 10.0/8 network, it is also not very practical to add every single IP address ;)
This is a bug from the days of KDE3. Still present, unbelievable.
*** Bug 217170 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 62663 ***