HDHomeRun FLEX DUO Only working on once device at a time

[bpmarkowitz]

I just added a HDHomeRun FLEX DUO to my network. Working great, but will only work with one device at a time.

Test setup: HDHomeRun app on my iPhone, and 2 AppleTVs

Which ever one I open first, it will work perfectly.

If I try to open a channel on a second or third device, it just says "No Video Data". This happens regardless of if I try the same channel, or a different channel.

Also, looking at http://hdhomerun.local/tuners.html I can see that it never attempts to use Tuner 1, only Tuner 0. Even if I try to tune a different channel than what is on Tuner 0.

Suspect a network issue. Using an Xfinity XB8 router/modem combo.

The only other thing I will add is I've been using this for a few weeks, but I feel like this behavior is new. Nothing has changed in my setup.

[bpmarkowitz]

Logs. Trying to tune to same channel from second device:

20250928-22:45:38 Tuner: tuner0 tuning 43.2 CBS-HD (8vsb:605MHz-2)
20250928-22:45:38 Tuner: tuner0 streaming http to 10.0.0.67:49324
20250928-22:46:06 Tuner: tuner1 tuning 43.2 CBS-HD (8vsb:605MHz-2)
20250928-22:46:16 HTTP: rejecting request from 10.0.0.123 - no video data
20250928-22:46:16 Tuner: tuner1 http stream ended (requested time reached)

[bpmarkowitz]

Update: Contacted SiliconDust support. They had me turn on diagnostics. No idea what they saw but they are sending me a new unit.