GSocket does not work on Windows with IP expressed as RFC5952
Submitted by Nicola
Please try this pipeline
gst-launch-1.0 videotestsrc ! rtpvrawpay ! udpsink host="::ffff:192.168.10.220"
as you can see the host is an IPv4-Mapped IPv6 addresses, this pipeline works fine on linux but not on windows,
The problem is probably in glib and not in udpsink itself, anyway I have a workaround for my app and actually no time to investigate further