I installed snf to see how is it going. On the next start I could not access internet (modem) anymore. It turned out, snf installs diald that starts up in default configuration, installs its own pseudo interface. With the result tha when I connect all IP goes with source address of this pseudo interface diald installs.
Folks, I already reported it. In case of diald default configuration CAN NOT BE CREATED. There is none! It means, diald MUST NO BE STARTED by default. Service may be enabled, no problem, but diald itself must not be started unless valid configuration is created. It took me some time to find out what's going wrong. For a newbie it is almost impossible. I know about arguments "if you have installed it you are assumed to use it". But when I install snf it installs many packages and not all of them are really used. Please, fix it. -andrej
