@tasaktomi
Hi,
Thanks for your reply. Yes, I was able to reproduce the issue when using Deco units (X90 and X50 Outdoor) in Access Point mode, with Telekom IPTV Android-based set-top boxes connected over Wi-Fi.
Here are the results of my testing on May 26, 2025 (CEST / UTC+2):
Box 1
MAC: 70:4A:0E:8C:AB:24
IP: 192.168.15.231
(This box hadn’t been connected for a while.)
11:52–11:54 → Channels loaded after ~2 minutes
11:57–12:01 → Channels loaded after ~4 minutes
12:02–12:10 → Channels loaded after ~8 minutes
Later attempts gradually improved (e.g., 1-minute load), possibly due to multicast group state being cached.
Box 2
MAC: 20:50:E7:3F:67:64
IP: 192.168.15.156
(This box was previously used over Ethernet and then switched to Wi-Fi.)
12:16 → Channels loaded instantly (within 1 second)
Additional Observations
Once the channels are loaded, everything works perfectly — no delays or playback issues during use.
The issue seems to affect only the initial IGMP join/multicast group registration over Wi-Fi.
There are no problems whatsoever when the same boxes are connected via Ethernet.
This clearly points to an issue with multicast traffic handling on Wi-Fi in AP mode, not with IPTV itself or my router configuration.
Guest Wi-Fi is not an option
Using the Guest network is not a viable alternative in my setup, because all devices must remain on the same LAN/VLAN for local services like Plex to work correctly. That’s also why I use the Deco units in AP mode rather than router mode.
Log file attached (https://drive.google.com/drive/folders/1hTRVp0jkYkr_CYifJk3MRH3fDEYcRDiN?usp=sharing)
I have also attached the system log captured from the Deco during the tests. You can use the timestamps above to search for multicast/IGMP activity related to the TV boxes.
Relevant entries (from the log):
Box 1 appears in the multicast encap table at 12:01:30 and 12:02:21.
Box 2 appears at 12:16:49.
These match the IPTV loading times and confirm that multicast join messages are being received — yet the delays still occur.
Please let me know if your senior engineers need further information, or if you would like me to perform additional tests.
Thank you again for your time and support!
