Oscam starts up and webif is accessible, but if you configure a newcamd server it fails to start the newcamd server. This is the error in the log:
13:13:22 00000000 s (net) newcamd: Cannot create socket (errno=97: Address family not supported by protocol) 13:13:22 00000000 s (net) newcamd: Trying fallback to IPv4 13:13:22 00000000 s (net) newcamd: setsockopt(IPV6_V6ONLY) failed (errno=92: Protocol not available) 13:13:22 00000000 s (net) newcamd: Bind request failed (Address family not supported by protocol), waiting another 119 seconds

This is only a problem on kernels with only IPV4. The simple fix is to disable IPV6 when compiling Oscam. Unfortunately there is no way to disable IPV6 in Oscam once it’s compiled in.
To disable it add —disable IPV6SUPPORT when running configure.

(from redmine: issue id 6070, created on 2016-08-21)