#matter-over-thread devices unstable as of today

1 messages · Page 1 of 1 (latest)

gritty plaza
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Today most of my matter-over-thread devices started becoming extremely unstable, showing unavailable in home assistant.

I'm seeing a lot of this in the OTBR add-on logs:

00:01:59.852 [N] MeshForwarder-:     dst:[fd9c:d7f0:d90:4b08:906f:aa96:6364:17a6]:53540
00:01:59.852 [N] MeshForwarder-: Dropping (reassembly queue) IPv6 UDP msg, len:669, chksum:0ef8, ecn:no, sec:yes, error:ReassemblyTimeout, prio:normal, rss:-75.125, radio:15.4
00:01:59.852 [N] MeshForwarder-:     src:[fd9c:d7f0:d90:4b08:fa34:6724:532:d111]:49158
00:01:59.852 [N] MeshForwarder-:     dst:[fd9c:d7f0:d90:4b08:906f:aa96:6364:17a6]:53540
00:02:05.852 [N] MeshForwarder-: Dropping (reassembly queue) IPv6 UDP msg, len:1259, chksum:7d14, ecn:no, sec:yes, error:ReassemblyTimeout, prio:normal, rss:-68.5, radio:15.4
00:02:05.852 [N] MeshForwarder-:     src:[fd4d:91d0:5158:1:6890:c851:78e:2059]:5540
00:02:05.852 [N] MeshForwarder-:     dst:[fd4d:91d0:5158:1:bd50:245a:61e7:5588]:38289
00:02:08.843 [N] MeshForwarder-: Dropping (reassembly queue) IPv6 UDP msg, len:708, chksum:5ce0, ecn:no, sec:yes, error:ReassemblyTimeout, prio:normal, rss:-68.0, radio:15.4
00:02:08.843 [N] MeshForwarder-:     src:[fd4d:91d0:5158:1:6890:c851:78e:2059]:5540
00:02:08.843 [N] MeshForwarder-:     dst:[fd4d:91d0:5158:1:bd50:245a:61e7:5588]:38289
00:02:08.843 [N] MeshForwarder-: Dropping (reassembly queue) IPv6 UDP msg, len:687, chksum:be8a, ecn:no, sec:yes, error:ReassemblyTimeout, prio:normal, rss:-66.0, radio:15.4
00:02:08.843 [N] MeshForwarder-:     src:[fd9c:d7f0:d90:4b08:aea8:a78e:d0f6:4929]:49218
00:02:08.843 [N] MeshForwarder-:     dst:[fd9c:d7f0:d90:4b08:906f:aa96:6364:17a6]:53540
00:02:09.841 [N] MeshForwarder-: Dropping (reassembly queue) IPv6 UDP msg, len:784, chksum:ba9f, ecn:no, sec:yes, error:ReassemblyTimeout, prio:normal, rss:-66.0, radio:15.4
00:02:09.841 [N] MeshForwarder-:     src:[fd4d:91d0:5158:1:4809:174e:9922:7842]:5540
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And matter server:

2025-07-22 02:13:39.590 (MainThread) INFO [matter_server.server.device_controller] <Node:30> Retrying node setup in 60 seconds...
2025-07-22 02:13:39.590 (MainThread) INFO [matter_server.server.device_controller] <Node:35> Setting-up node...
2025-07-22 02:13:40.973 (Dummy-2) CHIP_ERROR [chip.native.SC] CASESession timed out while waiting for a response from peer <000000000000003D, 1>. Current state was 1
2025-07-22 02:13:40.978 (Dummy-2) CHIP_ERROR [chip.native.IN] SendMessage() to UDP:[fd1f:5744:4ebe:5bf4:3e31:74ff:fedb:b3bb]:5540 failed: src/inet/UDPEndPointImplSockets.cpp:421: OS Error 0x02000065: Network is unreachable
2025-07-22 02:13:40.979 (Dummy-2) CHIP_ERROR [chip.native.-] src/inet/UDPEndPointImplSockets.cpp:421: OS Error 0x02000065: Network is unreachable at src/app/OperationalSessionSetup.cpp:254
2025-07-22 02:13:40.983 (Dummy-2) CHIP_ERROR [chip.native.IN] SendMessage() to UDP:[fd1f:5744:4ebe:5bf4:3e31:74ff:fedb:b3bb]:5540 failed: src/inet/UDPEndPointImplSockets.cpp:421: OS Error 0x02000065: Network is unreachable
2025-07-22 02:13:40.983 (Dummy-2) CHIP_ERROR [chip.native.-] src/inet/UDPEndPointImplSockets.cpp:421: OS Error 0x02000065: Network is unreachable at src/app/OperationalSessionSetup.cpp:254
2025-07-22 02:13:40.984 (MainThread) WARNING [matter_server.server.device_controller] <Node:61> Setup for node failed: Unable to establish CASE session with Node 61
2025-07-22 02:13:40.984 (MainThread) INFO [matter_server.server.device_controller] <Node:61> Retrying node setup in 60 seconds...
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I've tried rebooting my home assistant yellow entirely, restarting both the OTBR add-on and the matter server add-on, and power cycling the matter-over-thread devices themselves

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The weird thing is that not all of my devices are down, only most

gritty plaza
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it looks like something is slamming 2.4ghz airtime at roughly the exact same time as my devices starting going wonky

image.png image.png
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now just to find out what

gritty plaza
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i have no idea

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i restored from yesterday's backup and everything is working again?

image.png
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(thermostat is expected to be unavailable i nuked ipv6 and that's a matter-over-wifi device)

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idk what happened but i'll take it