Tvheadend

I'm trying to set up IPTV on qnap nas using TVHeadend.

I added satip parameter at command line. However when I try to start I get the following error on my QNAP

[ ERROR] satip: Cannot get http://10.0.0.1:49000/satipdesc.xml: No route to host

and no SAT-IP TV Adapters visible at dvb inputs

I'm using a Fritz Box with TV enabled and I get a reply for http://10.0.0.1:49000/satipdesc.xml

Fritz box cable TV tuner IP: 10.0.0.1
NAS IP: 10.0.0.2

What can I do to show tuners in TVH and to fix the error message?

edit Reason in my case was that another virtual adapter was active. Once I deleted it TV Adapters where visible