Again, I copied the working config from my HTPC (4.2.6-62) to my Gentoo system (4.3-1517).
I get the errors I posted before, and some which I forgot to mention yet:
"[ ERROR] satip: SAT>IP DVB-C Tuner #1 (10.0.0.1@UDP) - RTSP cmd error 7 (Unbekannter Fehler -7) [8-408]"
So, I assume the cause for this problem either in missing kernel modules or in system config parameters.
Kind regards,
Yann