GNOME Bugzilla – Bug 687981
GSocket: Add API to get the MTU of the socket
Last modified: 2012-11-14 15:54:20 UTC
See summary ;)
bug 623187 now has patches adding g_socket_get_option() which should allow you to implement this fairly easily yourself (in gstreamer). Can you try it out? *** This bug has been marked as a duplicate of bug 623187 ***