[Bug 47956] New: IGMP source specific multicast does not create join requests for source

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47956

Bug ID: 47956
           Summary: IGMP source specific multicast does not create join
                    requests for source
           Product: Wine
           Version: 4.17
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winsock
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

https://forum.winehq.org/viewtopic.php?p=125040#p125040

How to reproduce bug:
Install VLC through Wine (I am running the latest: 3.0.8), and VLC on a the
native Linux host.
Launch Wireshark on Linux and monitor the network port (filter IGMP to
simplify).
Launch VLC through Wine and choose Media -> Open Network Stream. Enter a URL
such as udp://10.40.2.2@232.17.4.80:4000 in the dialog box and click "Play".
You should see the IGMP request go out for a "Membership Report / Join group
232.17.4.80 for any sources"
Repeat for VLC through Linux and you will see the proper IGMP membership
request for source {10.40.2.2}.