Comment 26 for bug 229366

Sorry, there is a typo in my previous post.

In order to resolve problem with displaying knetworkconf in KDE 4.x system settings need to change header of "kcm_knetworkconfmodule.desktop" file to be following:
--
[Desktop Entry]
Type=Service
X-KDE-ServiceTypes=KCModule
X-DocPath=knetworkconf/index.docbook
Icon=knetworkconf
#Icon=preferences-system-network
Exec=kcmshell4 kcm_knetworkconfmodule

X-KDE-Library=kcm_knetworkconfmodule
X-KDE-PluginKeyword=knetworkconf
X-KDE-ParentApp=kcontrol

X-KDE-System-Settings-Parent-Category=network-settings
--

This will add additional section to "System Settings"->"General"->"Network & Connectivity"->"Network Settings"->"Network Settings".

Thanks,
Serhiy