[PROBLEM] Airplay No Sound Output

[christopherr]

Here is a summary of key information which might be useful in debugging this:


- Occurs on both pi-3B+ and pi4 
- Only happens when airplaying from iphones (verified with 14Pro and 12mini) (airplaying from macbook and iPad does not exhibit this issue)
- Seems to be resolved when systemd-timedated.service terminates
- Network is dual stack ipv4 and ipv6 (may or may not be relevant)
- Pi is connected over wi-fi (i'm not able to run ethernet to its location)

Things I have tried without success:
- Turning off sonos which is on the network
- Disabling the run_this_before_entering_active_state and run_this_after_exiting_active_state scripts
- Disable ipv6 announcements for mDNS
- Disabling other renderers I have installed (plexamp and roonbridge)


I could do a packet capture on the Pi and on my iPhone, but I don't have the knowledge to be able to say if what is happening is probelematic or not.