Hello,
It seems that the new SLZB-MR4u is not working with the OTBR addon in HA via LAN.
If I use my old SLZB-06 everything works, but if I change the IP to my new SLZB-MR4u I get errors.
SMLight support says: “Most likely, the OTBR addon is currently broken, unfortunately this cannot be fixed on our side. Please post a bug report in the addon developer repository”
Log:
[12:26:16] INFO: Starting mDNS Responder...
Default: mDNSResponder (Engineering Build) (Oct 28 2025 07:36:47) starting
s6-rc: info: service legacy-cont-init successfully started
[12:26:16] INFO: Starting socat TCP client for OTBR daemon...
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Add-on: OpenThread Border Router
OpenThread Border Router add-on
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Add-on version: 2.15.0
You are running the latest version of this add-on.
System: Home Assistant OS 16.2 (amd64 / qemux86-64)
Home Assistant Core: 2025.10.4
Home Assistant Supervisor: 2025.10.0
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Please, share the above information when looking for help
or support in, e.g., GitHub, forums or the Discord chat.
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s6-rc: info: service banner successfully started
s6-rc: info: service socat-otbr-tcp successfully started
s6-rc: info: service otbr-agent: starting
[12:26:17] INFO: Setup OTBR firewall...
[12:26:17] INFO: Migrating OTBR settings if needed...
2025-11-03 12:26:17 homeassistant asyncio[246] DEBUG Using selector: EpollSelector
2025-11-03 12:26:17 homeassistant zigpy.serial[246] DEBUG Opening a serial connection to '/tmp/ttyOTBR' (baudrate=460800, xonxoff=False, rtscts=False)
2025-11-03 12:26:17 homeassistant zigpy.serial[246] DEBUG Connection made: SerialTransport(<_UnixSelectorEventLoop running=True closed=False debug=False>, <universal_silabs_flasher.spinel.SpinelProtocol object at 0x7f861e3700d0>, Serial<id=0x7f861e364a30, open=True>(port='/tmp/ttyOTBR', baudrate=460800, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False))
2025-11-03 12:26:17 homeassistant universal_silabs_flasher.spinel[246] 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')
2025-11-03 12:26:17 homeassistant universal_silabs_flasher.spinel[246] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2025-11-03 12:26:18 homeassistant universal_silabs_flasher.spinel[246] DEBUG Decoded HDLC frame: HDLCLiteFrame(data=b'\x83\x06\x08D\x9f\xda\xff\xfex\xa7\xba')
2025-11-03 12:26:18 homeassistant universal_silabs_flasher.spinel[246] DEBUG Parsed frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_IS: 6>, data=b'\x08D\x9f\xda\xff\xfex\xa7\xba')
2025-11-03 12:26:18 homeassistant zigpy.serial[246] DEBUG Waiting for serial port to close
2025-11-03 12:26:18 homeassistant zigpy.serial[246] DEBUG Connection lost: None
Settings file for adapter 449fdafffe78a7ba already exists at /data/thread/0_449fdafffe78a7ba.data but appears to be old, archiving
Wrote new settings file to /data/thread/0_449fdafffe78a7ba.data
[12:26:18] INFO: Starting otbr-agent...
[NOTE]-AGENT---: Running 0.3.0-b067e5ac-dirty
[NOTE]-AGENT---: Thread version: 1.3.0
tiocmbic: Inappropriate ioctl for device
[NOTE]-AGENT---: Thread interface: wpan0
[NOTE]-AGENT---: Radio URL: spinel+hdlc+uart:///tmp/ttyOTBR?uart-baudrate=460800&uart-init-deassert
[NOTE]-AGENT---: Radio URL: trel://enp0s3
[NOTE]-ILS-----: Infra link selected: enp0s3
[INFO]-RCP_HOS-: OpenThread log level changed to 5
53d.17:37:14.576 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:0, cmd:RESET
53d.17:37:14.576 [D] P-SpinelDrive-: Waiting response: key=0
53d.17:37:14.584 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:0, cmd:PROP_VALUE_IS, key:LAST_STATUS, status:RESET_POWER_ON
53d.17:37:14.584 [I] P-SpinelDrive-: co-processor reset: RESET_POWER_ON
53d.17:37:14.584 [C] P-SpinelDrive-: Software reset co-processor successfully
53d.17:37:14.584 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:PROTOCOL_VERSION
53d.17:37:14.584 [D] P-SpinelDrive-: Waiting response: key=1
53d.17:37:14.595 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:PROTOCOL_VERSION, major:4, minor:3
53d.17:37:14.595 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:NCP_VERSION
53d.17:37:14.595 [D] P-SpinelDrive-: Waiting response: key=2
53d.17:37:14.607 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:NCP_VERSION, version:SL-OPENTHREAD/2.7.0.0_GitHub-fb0446f53; EFR32; Jul 3 2025 01:25:59
53d.17:37:14.608 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:CAPS
53d.17:37:14.608 [D] P-SpinelDrive-: Waiting response: key=5
53d.17:37:14.618 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:CAPS, caps:COUNTERS UNSOL_UPDATE_FILTER 802_15_4_2450MHZ_OQPSK CONFIG_RADIO MAC_RAW RCP_API_VERSION RCP_MIN_HOST_API_VERSION RCP_RESET_TO_BOOTLOADER RCP_LOG_CRASH_DUMP OPENTHREAD_LOG_METADATA
[INFO]-BA------: Ephemeral Key is: disabled during initialization
53d.17:37:14.619 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:HWADDR
53d.17:37:14.619 [D] P-RadioSpinel-: Wait response: tid=1 key=8
53d.17:37:14.629 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:HWADDR, eui64:449fdafffe78a7ba
53d.17:37:14.629 [D] P-RadioSpinel-: RCP supports crash dump logging. Requesting crash dump.
53d.17:37:14.629 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_SET, key:RCP_LOG_CRASH_DUMP, log-crash-dump
53d.17:37:14.629 [D] P-RadioSpinel-: Wait response: tid=2 key=178
53d.17:37:14.640 [W] P-HdlcIntface-: Error decoding hdlc frame: Parse
53d.17:37:16.631 [W] P-RadioSpinel-: Wait for response timeout
53d.17:37:16.631 [W] P-RadioSpinel-: RCP failure detected
53d.17:37:16.631 [W] P-RadioSpinel-: Trying to recover (1/2)
53d.17:37:16.631 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_SET, key:PHY_ENABLED, enabled:1
53d.17:37:16.631 [D] P-RadioSpinel-: Wait response: tid=1 key=32
53d.17:37:16.639 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:PHY_ENABLED, enabled:1
53d.17:37:16.639 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_SET, key:MAC_15_4_PANID, panid:0xffff
53d.17:37:16.639 [D] P-RadioSpinel-: Wait response: tid=2 key=54
53d.17:37:16.650 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_IS, key:MAC_15_4_PANID, panid:0xffff
53d.17:37:16.650 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_SET, key:MAC_15_4_SADDR, saddr:0x0000
53d.17:37:16.650 [D] P-RadioSpinel-: Wait response: tid=3 key=53
53d.17:37:16.661 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_IS, key:MAC_15_4_SADDR, saddr:0x0000
53d.17:37:16.661 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_SET, key:MAC_15_4_LADDR, laddr:0000000000000000
53d.17:37:16.661 [D] P-RadioSpinel-: Wait response: tid=4 key=52
53d.17:37:16.672 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_IS, key:MAC_15_4_LADDR, laddr:0000000000000000
53d.17:37:16.672 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_SET, key:PHY_CHAN, channel:0
53d.17:37:16.672 [D] P-RadioSpinel-: Wait response: tid=5 key=33
53d.17:37:16.683 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_IS, key:PHY_CHAN, channel:0
53d.17:37:16.683 [D] P-RadioSpinel-: RCP supports crash dump logging. Requesting crash dump.
53d.17:37:16.683 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:6, cmd:PROP_VALUE_SET, key:RCP_LOG_CRASH_DUMP, log-crash-dump
53d.17:37:16.683 [D] P-RadioSpinel-: Wait response: tid=6 key=178
53d.17:37:16.694 [W] P-HdlcIntface-: Error decoding hdlc frame: Parse
53d.17:37:18.685 [W] P-RadioSpinel-: Wait for response timeout
53d.17:37:18.685 [W] P-RadioSpinel-: RCP failure detected
53d.17:37:18.685 [W] P-RadioSpinel-: Trying to recover (1/2)
53d.17:37:18.685 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_SET, key:PHY_ENABLED, enabled:1
53d.17:37:18.685 [D] P-RadioSpinel-: Wait response: tid=1 key=32
53d.17:37:18.692 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:PHY_ENABLED, enabled:1
53d.17:37:18.692 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_SET, key:MAC_15_4_PANID, panid:0xffff
53d.17:37:18.692 [D] P-RadioSpinel-: Wait response: tid=2 key=54
53d.17:37:18.703 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_IS, key:MAC_15_4_PANID, panid:0xffff
53d.17:37:18.703 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_SET, key:MAC_15_4_SADDR, saddr:0x0000
53d.17:37:18.703 [D] P-RadioSpinel-: Wait response: tid=3 key=53
53d.17:37:18.714 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_IS, key:MAC_15_4_SADDR, saddr:0x0000
53d.17:37:18.714 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_SET, key:MAC_15_4_LADDR, laddr:0000000000000000
53d.17:37:18.714 [D] P-RadioSpinel-: Wait response: tid=4 key=52
53d.17:37:18.725 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_IS, key:MAC_15_4_LADDR, laddr:0000000000000000
53d.17:37:18.725 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_SET, key:PHY_CHAN, channel:0
53d.17:37:18.725 [D] P-RadioSpinel-: Wait response: tid=5 key=33
53d.17:37:18.736 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_IS, key:PHY_CHAN, channel:0
53d.17:37:18.736 [D] P-RadioSpinel-: RCP supports crash dump logging. Requesting crash dump.
53d.17:37:18.736 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:6, cmd:PROP_VALUE_SET, key:RCP_LOG_CRASH_DUMP, log-crash-dump
53d.17:37:18.736 [D] P-RadioSpinel-: Wait response: tid=6 key=178
53d.17:37:18.747 [W] P-HdlcIntface-: Error decoding hdlc frame: Parse
53d.17:37:20.738 [W] P-RadioSpinel-: Wait for response timeout
53d.17:37:20.738 [W] P-RadioSpinel-: RCP failure detected
53d.17:37:20.738 [W] P-RadioSpinel-: Trying to recover (1/2)
53d.17:37:20.738 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_SET, key:PHY_ENABLED, enabled:1
53d.17:37:20.738 [D] P-RadioSpinel-: Wait response: tid=1 key=32
My config:
device: /dev/ttyS1
baudrate: "460800"
flow_control: false
otbr_log_level: debug
firewall: true
nat64: false
network_device: 192.168.1.163:6638
Same problem here: https://www.reddit.com/r/homeassistant/comments/1oj88mt/smlight_mr4u/
Thanks!