rtp-recv quit working after upgrade

[DaveD]

I have a whole house audio system using pulseaudio's RTP multicast and 
it has worked flawlessly with perfect sync for years.  I recently 
upgraded two fedora 37 systems to fedora 41 and now neither of them play 
the RTP stream from my server (which is still running fedora 37).  The 
server is running pulseaudio version 16.1 and the two upgraded systems 
are now running pulse version 17.0.  I have a really old system running 
pulse 12.2 and another raspberry pi running pulse 16.1 and they both 
still play the stream.  I can play the stream with VLC on both of the 
non-working upgraded systems.  Local sound is working fine.

I am loading the same modules as before, but there are changes in the 
fedora defaults that I am unsure of.  Also, fedora now defaults to 
pipewire, which I have disabled in a similar manner as before but, 
again, I am uncertain if their changes have caused the problem.  Was 
there a change in pulseaudio's RTP multicast architecture between 16.1 
and 17.0 that would cause this and is there something I need to change 
on the sender or receivers to get them to play the stream?