I've setup a clean Debian 8 with FS 1.6.2.
When trying to start I get the following error:
2015-10-01 06:26:13.544697 [ERR] sofia.c:2945 Error Creating SIP UA for profile: internal (sip:mod_sofia@139.125.289.11:5060;transport=udp,tcp)
The likely causes for this are:
1) Another application is already listening on the specified address.
2) The IP the profile is attempting to bind to is not local to this system.
No other application is running on port 5060, I've also tried to change this - same error still occurs on other ports.