Android 10+ multicast groups

Community Support Android
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1

We are attempting to provide a list of multicast groups to ZeroTier’s Android client; in our current source we read /proc/net/igmp file to get a list of groups; this works in Android 9 and below, but doesn’t work in Android 10 and above.
Any thoughts/ideas might be helpful.

Things I’ve tried:

  1. I was able to monitor a network interface for multicast join packets but this doesn’t give me any multicast groups that were joined before starting the application.
  2. I tried sending an IGMP membership query but I’m not seeing the reply packets.
2

Short of Android allowing access to read /proc/net/* once again, or offering another API for access to subscribed multicast groups, there’s not much that can be done. It’s out of our hands, unfortunately.

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