Hi,
after a long time - probably one year using SMLight SLZB07p7 - USB Dongle - my OTBR can’t start:
s6-rc: info: service banner successfully started
s6-rc: info: service otbr-agent: starting
[10:08:49] INFO: Setup OTBR firewall...
[10:08:50] INFO: Migrating OTBR settings if needed...
2025-10-30 10:08:50 homeassistant asyncio[226] DEBUG Using selector: EpollSelector
2025-10-30 10:08:50 homeassistant zigpy.serial[226] DEBUG Opening a serial connection to '/dev/serial/by-id/usb-SMLIGHT_SMLIGHT_SLZB-07p7_4cdc2b8ba473ed118a3b66eefdf7b791-if00-port0' (baudrate=460800, xonxoff=False, rtscts=False)
2025-10-30 10:08:50 homeassistant zigpy.serial[226] DEBUG Connection made: SerialTransport(<_UnixSelectorEventLoop running=True closed=False debug=False>, <universal_silabs_flasher.spinel.SpinelProtocol object at 0x7f9d6d02d0>, Serial<id=0x7f9d420ac0, open=True>(port='/dev/serial/by-id/usb-SMLIGHT_SMLIGHT_SLZB-07p7_4cdc2b8ba473ed118a3b66eefdf7b791-if00-port0', baudrate=460800, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False))
2025-10-30 10:08:50 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 10:08:50 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 10:08:51 homeassistant universal_silabs_flasher.spinel[226] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 1 of 4)
2025-10-30 10:08:51 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 10:08:51 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 10:08:52 homeassistant universal_silabs_flasher.spinel[226] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 2 of 4)
2025-10-30 10:08:52 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 10:08:52 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 10:08:53 homeassistant universal_silabs_flasher.spinel[226] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 3 of 4)
2025-10-30 10:08:54 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 10:08:54 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 10:08:55 homeassistant universal_silabs_flasher.spinel[226] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 4 of 4)
2025-10-30 10:08:55 homeassistant zigpy.serial[226] DEBUG Waiting for serial port to close
2025-10-30 10:08:55 homeassistant zigpy.serial[226] DEBUG Connection lost: None
Traceback (most recent call last):
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 213, in send_frame
return await asyncio.shield(future)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
asyncio.exceptions.CancelledError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/bin/migrate_otbr_settings.py", line 189, in <module>
asyncio.run(main())
File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/base_events.py", line 653, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/usr/local/bin/migrate_otbr_settings.py", line 126, in main
hwaddr = await get_adapter_hardware_addr(args.adapter, args.baudrate)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/bin/migrate_otbr_settings.py", line 84, in get_adapter_hardware_addr
rsp = await protocol.send_command(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 245, in send_command
return await self.send_frame(frame, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 212, in send_frame
async with asyncio_timeout(timeout):
File "/usr/lib/python3.11/asyncio/timeouts.py", line 98, in __aexit__
raise TimeoutError
TimeoutError
[10:08:55] WARNING: otbr-agent exited with code 1 (by signal 0).
Chain OTBR_FORWARD_INGRESS (0 references)
target prot opt source destination
DROP all -- anywhere anywhere PKTTYPE = unicast
DROP all -- anywhere anywhere match-set otbr-ingress-deny-src src
ACCEPT all -- anywhere anywhere match-set otbr-ingress-allow-dst dst
DROP all -- anywhere anywhere PKTTYPE = unicast
ACCEPT all -- anywhere anywhere
otbr-ingress-deny-src
otbr-ingress-deny-src-swap
otbr-ingress-allow-dst
otbr-ingress-allow-dst-swap
Chain OTBR_FORWARD_EGRESS (0 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
[10:08:55] INFO: OTBR firewall teardown completed.
s6-svlisten1: fatal: /run/s6-rc/servicedirs/otbr-agent failed permanently or its supervisor died
s6-rc: warning: unable to start service otbr-agent: command exited 1
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service banner: stopping
s6-rc: info: service mdns: stopping
s6-rc: info: service banner successfully stopped
/run/s6/basedir/scripts/rc.init: warning: s6-rc failed to properly bring all the services up! Check your logs (in /run/uncaught-logs/current if you have in-container logging) for more information.
/run/s6/basedir/scripts/rc.init: fatal: stopping the container.
Default: mDNSResponder (Engineering Build) (Oct 28 2025 07:42:47) stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
[10:08:56] INFO: mDNS ended with exit code 4 (signal 0)...
s6-rc: info: service mdns successfully stopped
[11:01:27] INFO: The otbr-web is disabled.
s6-rc: info: service mdns: starting
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service mdns successfully started
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service banner: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
[11:01:29] INFO: Starting mDNS Responder...
Default: mDNSResponder (Engineering Build) (Oct 28 2025 07:42:47) starting
-----------------------------------------------------------
Add-on: OpenThread Border Router
OpenThread Border Router add-on
-----------------------------------------------------------
Add-on version: 2.15.0
You are running the latest version of this add-on.
System: Home Assistant OS 16.2 (aarch64 / yellow)
Home Assistant Core: 2025.10.4
Home Assistant Supervisor: 2025.10.0
-----------------------------------------------------------
Please, share the above information when looking for help
or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
s6-rc: info: service banner successfully started
s6-rc: info: service otbr-agent: starting
[11:01:37] INFO: Setup OTBR firewall...
[11:01:37] INFO: Migrating OTBR settings if needed...
2025-10-30 11:01:38 homeassistant asyncio[227] DEBUG Using selector: EpollSelector
2025-10-30 11:01:38 homeassistant zigpy.serial[227] DEBUG Opening a serial connection to '/dev/serial/by-id/usb-SMLIGHT_SMLIGHT_SLZB-07p7_4cdc2b8ba473ed118a3b66eefdf7b791-if00-port0' (baudrate=460800, xonxoff=False, rtscts=False)
2025-10-30 11:01:38 homeassistant zigpy.serial[227] DEBUG Connection made: SerialTransport(<_UnixSelectorEventLoop running=True closed=False debug=False>, <universal_silabs_flasher.spinel.SpinelProtocol object at 0x7f99e702d0>, Serial<id=0x7f99bc0b20, open=True>(port='/dev/serial/by-id/usb-SMLIGHT_SMLIGHT_SLZB-07p7_4cdc2b8ba473ed118a3b66eefdf7b791-if00-port0', baudrate=460800, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False))
2025-10-30 11:01:38 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 11:01:38 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 11:01:39 homeassistant universal_silabs_flasher.spinel[227] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 1 of 4)
2025-10-30 11:01:39 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 11:01:39 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 11:01:40 homeassistant universal_silabs_flasher.spinel[227] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 2 of 4)
2025-10-30 11:01:40 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 11:01:40 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 11:01:41 homeassistant universal_silabs_flasher.spinel[227] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 3 of 4)
2025-10-30 11:01:41 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08')
2025-10-30 11:01:41 homeassistant universal_silabs_flasher.spinel[227] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-10-30 11:01:42 homeassistant universal_silabs_flasher.spinel[227] DEBUG Failed to send SpinelFrame(header=SpinelHeader(network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_GET: 2>, data=b'\x08'), trying again in 0.10s (attempt 4 of 4)
2025-10-30 11:01:42 homeassistant zigpy.serial[227] DEBUG Waiting for serial port to close
2025-10-30 11:01:42 homeassistant zigpy.serial[227] DEBUG Connection lost: None
Traceback (most recent call last):
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 213, in send_frame
return await asyncio.shield(future)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
asyncio.exceptions.CancelledError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/bin/migrate_otbr_settings.py", line 189, in <module>
asyncio.run(main())
File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/base_events.py", line 653, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/usr/local/bin/migrate_otbr_settings.py", line 126, in main
hwaddr = await get_adapter_hardware_addr(args.adapter, args.baudrate)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/bin/migrate_otbr_settings.py", line 84, in get_adapter_hardware_addr
rsp = await protocol.send_command(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 245, in send_command
return await self.send_frame(frame, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/universal_silabs_flasher/spinel.py", line 212, in send_frame
async with asyncio_timeout(timeout):
File "/usr/lib/python3.11/asyncio/timeouts.py", line 98, in __aexit__
raise TimeoutError
TimeoutError
[11:01:43] WARNING: otbr-agent exited with code 1 (by signal 0).
Chain OTBR_FORWARD_INGRESS (0 references)
target prot opt source destination
DROP all -- anywhere anywhere PKTTYPE = unicast
DROP all -- anywhere anywhere match-set otbr-ingress-deny-src src
ACCEPT all -- anywhere anywhere match-set otbr-ingress-allow-dst dst
DROP all -- anywhere anywhere PKTTYPE = unicast
ACCEPT all -- anywhere anywhere
otbr-ingress-deny-src
otbr-ingress-deny-src-swap
otbr-ingress-allow-dst
otbr-ingress-allow-dst-swap
Chain OTBR_FORWARD_EGRESS (0 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
[11:01:43] INFO: OTBR firewall teardown completed.
s6-svlisten1: fatal: /run/s6-rc/servicedirs/otbr-agent failed permanently or its supervisor died
s6-rc: warning: unable to start service otbr-agent: command exited 1
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service banner: stopping
s6-rc: info: service mdns: stopping
s6-rc: info: service banner successfully stopped
Default: mDNSResponder (Engineering Build) (Oct 28 2025 07:42:47) stopping
/run/s6/basedir/scripts/rc.init: warning: s6-rc failed to properly bring all the services up! Check your logs (in /run/uncaught-logs/current if you have in-container logging) for more information.
/run/s6/basedir/scripts/rc.init: fatal: stopping the container.
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
[11:01:43] INFO: mDNS ended with exit code 4 (signal 0)...
s6-rc: info: service mdns successfully stopped
I have tried to unplug the USB dongle and succesfully flashed it with the PC directly from SMLight webpage - with Thread Firmware.
Restarted, Shut down for a while, started the HA again. Uninstalled the Addon, set the correct parameters
device: >-
/dev/serial/by-id/usb-SMLIGHT_SMLIGHT_SLZB-07p7_4cdc2b8ba473ed118a3b66eefdf7b791-if00-port0
baudrate: "460800"
flow_control: false
otbr_log_level: notice
firewall: true
nat64: false
Nothing helps.
- What else can I try to repiar it?
- how to diagnose it further?
Thank you,
Michal, Slovakia