media_player.join fail for MusicCast about core HOT 3 OPEN

Hi, It seems to be a UDP related problem. HA is on 10.0.10.x subnet and MusicCast equipment is on 192.168.1.x subnet. I was able to get the “media_player.join” command to execute without error by moving the tested MusicCast equipment to same subnet as HA – but still no working media (no “play”) – but now I understand what’s the cause of the problem. Thanks for the information. /Björn Från: micha91 ***@***.***> Skickat: den 2 juni 2024 12:19 Till: home-assistant/core ***@***.***> Kopia: gituser-ebrus ***@***.***>; Author ***@***.***> Ämne: Re: [home-assistant/core] media_player.join fail for MusicCast (Issue #118624) Unfortunately I can't reproduce the issues with the unsuccessful join. Please make sure that you only select entities bound to the MusicCast integration. Please mind that the MusicCast integration uses a pushing mechanism to get status updates from the devices to reduce the amount of fired requests to the device. This is possible by opening a port in Home Assistant and telling the device to send a message via UDP to this port on every status change. Because the join process has multiple steps and we need these status updates to proceed in this process, it's essential that this communication channel works. As you are using HA in a container you should make sure that your HA container runs in host network mode. Regarding the native app: You can still use the native app to create groups. Unfortunately the MusicCast system forces us to do some garbage collection when it comes to group members. For that reason the HA MusicCast integration will remove group members whenever it doesn't know that the members are actually part of the group. This happens most often when you did not add the MusicCast device to HA, but can also be related to the UDP issue mentioned above. — Reply to this email directly, view it on GitHub <#118624 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/BI4HQHPPFGG5XOT4C6DOZHDZFLWQRAVCNFSM6AAAAABIU24CBGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNBTG44DQNRRGE> . You are receiving this because you authored the thread. <https://github.com/notifications/beacon/BI4HQHNK3GODQITIZAX3GG3ZFLWQRA5CNFSM6AAAAABIU24CBGWGG33NNVSW45C7OR4XAZNMJFZXG5LFINXW23LFNZ2KUY3PNVWWK3TUL5UWJTT7Y6PEG.gif> Message ID: ***@***.*** ***@***.***> >