Bug#827296: - connman: Connman slow down the boot when no network available

[zi]

Problem exists up to libgnutls30:amd64 3.5.3-4 at the moment on my  
Debian Sid. So ">= 3.5.3-2" is staying true until falsified.

The graphical plot does not show further information than  
connman.service being in the state "Activating" for the defined  
TimeoutStartSec, symbolized by a red bar.

Thanks