In my application (http://svn.sat.qc.ca/trac/scenic/) I create my own sockets and pass them to udpsink elements via the sockfd property. Until recently this worked fine, now however, i get this failure message:

gstmultiudpsink.c(808): gst_multiudpsink_configure_client (): /GstPipeline:pipeline/GstUDPSink:udpsink1:
Could not set TTL socket option (97): Address family not supported by protocol

I think commit 7f980d28aa23c64dce423c0c0f994b2d136fc7fe might be the one that introduced this issue.

My guess is that the sink->ss_family variable is never being updated with the value of the socket's family when it's an external socket.

Here's the output of my program up until it dies:

Creating socket for host 127.0.0.1, port 10000, IPV4 Socket
/GstPipeline:pipeline/GstUDPSink:udpsink0: port = 10000
/GstPipeline:pipeline/GstUDPSink:udpsink0: host = "127.0.0.1"
/GstPipeline:pipeline/GstUDPSink:udpsink0: sockfd = 6

Creating socket for host 127.0.0.1, port 10001, IPV4 Socket
/GstPipeline:pipeline/GstUDPSink:udpsink1: async = FALSE
/GstPipeline:pipeline/GstUDPSink:udpsink1: sync = FALSE
/GstPipeline:pipeline/GstUDPSink:udpsink1: port = 10001
/GstPipeline:pipeline/GstUDPSink:udpsink1: host = "127.0.0.1"
/GstPipeline:pipeline/GstUDPSink:udpsink1: sockfd = 7

Creating socket for port 10005, IPV4 Socket
/GstPipeline:pipeline/GstUDPSrc:udpsrc0: port = 10005
/GstPipeline:pipeline/GstUDPSrc:udpsrc0: sockfd = 8
GStreamer-CRITICAL **: Could not add signal watch to bus bus1
Debug details: gstmultiudpsink.c(808): gst_multiudpsink_configure_client (): /GstPipeline:pipeline/GstUDPSink:udpsink1:
Could not set TTL socket option (97): Address family not supported by protocol