Upgrading to ZBT-2 led to my OTBR add on unaliving itself.
Issue remains after multiple reboots and even reverting to previous backup.
Looking at the logs here are some of the main errors I receive.
[W] DuaManager----: Failed to perform next registration: NotFound
[N] MeshForwarder-: Dropping rx frag frame, error:Drop, len:
[N] MeshForwarder-: Dropping IPv6 UDP msg, len:
[W] Mle-----------: Failed to process Child Update Response as child: NotFound
OTBR LOG
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Add-on: OpenThread Border Router
OpenThread Border Router add-on
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Add-on version: 2.15.3
You are running the latest version of this add-on.
System: Home Assistant OS 16.3 (aarch64 / green)
Home Assistant Core: 2026.1.2
Home Assistant Supervisor: 2026.01.1
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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 otbr-agent: starting
[16:20:30] INFO: Setup OTBR firewall...
[16:20:31] INFO: Migrating OTBR settings if needed...
2026-01-17 16:20:31 homeassistant asyncio[226] DEBUG Using selector: EpollSelector
2026-01-17 16:20:31 homeassistant zigpy.serial[226] DEBUG Opening a serial connection to '/dev/serial/by-id/usb-Nabu_Casa_ZBT-2_DCB4D910E7BC-if00' (baudrate=460800, xonxoff=False, rtscts=True)
2026-01-17 16:20:31 homeassistant serialx.platforms.serial_posix[226] DEBUG Configuring serial port '/dev/serial/by-id/usb-Nabu_Casa_ZBT-2_DCB4D910E7BC-if00'
2026-01-17 16:20:31 homeassistant serialx.platforms.serial_posix[226] DEBUG Configuring serial port: [0, 0, 2147486896, 0, 4100, 4100, [b'\x03', b'\x1c', b'\x7f', b'\x15', b'\x04', 0, 0, b'\x00', b'\x11', b'\x13', b'\x1a', b'\x00', b'\x12', b'\x0f', b'\x17', b'\x16', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00', b'\x00']]
2026-01-17 16:20:31 homeassistant serialx.platforms.serial_posix[226] DEBUG Setting low latency mode: True
2026-01-17 16:20:31 homeassistant serialx.platforms.serial_posix[226] DEBUG Setting modem pins: ModemPins[dtr rts]
2026-01-17 16:20:31 homeassistant serialx.platforms.serial_posix[226] DEBUG Setting TIOCMBIS: 0x00000006
2026-01-17 16:20:31 homeassistant zigpy.serial[226] DEBUG Connection made: <serialx.platforms.serial_posix.PosixSerialTransport object at 0xffff9dd47910>
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending frame SpinelFrame(header=SpinelHeader(transaction_id=0, network_link_id=0, flag=2), command_id=<CommandID.RESET: 1>, data=b'\x02')
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x80\x01\x02\xea\xf0~'
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Immediately writing b'~\x80\x01\x02\xea\xf0~'
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Sent 7 of 7 bytes
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Event loop woke up reader
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Received b'~\x80\x06\x00p\xeet~'
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Decoded HDLC frame: HDLCLiteFrame(data=b'\x80\x06\x00p')
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Parsed frame SpinelFrame(header=SpinelHeader(transaction_id=0, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_IS: 6>, data=b'\x00p')
2026-01-17 16:20:31 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')
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Sending data b'~\x83\x02\x08\xbc\x9a~'
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Immediately writing b'~\x83\x02\x08\xbc\x9a~'
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Sent 7 of 7 bytes
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Event loop woke up reader
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Received b'~\x83\x06\x08\x982h\xff\xfe\xbdp\x86\xaeF~'
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Decoded HDLC frame: HDLCLiteFrame(data=b'\x83\x06\x08\x982h\xff\xfe\xbdp\x86')
2026-01-17 16:20:31 homeassistant universal_silabs_flasher.spinel[226] DEBUG Parsed frame SpinelFrame(header=SpinelHeader(transaction_id=3, network_link_id=0, flag=2), command_id=<CommandID.PROP_VALUE_IS: 6>, data=b'\x08\x982h\xff\xfe\xbdp\x86')
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Closing at the request of the application
2026-01-17 16:20:31 homeassistant zigpy.serial[226] DEBUG Waiting for serial port to close
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Closing connection: None
2026-01-17 16:20:31 homeassistant serialx.descriptor_transport[226] DEBUG Closing file descriptor 7
2026-01-17 16:20:32 homeassistant serialx.descriptor_transport[226] DEBUG Calling protocol `connection_lost` with exc=None
2026-01-17 16:20:32 homeassistant zigpy.serial[226] DEBUG Connection lost: None
Adapter settings file /data/thread/0_983268fffebd7086.data is the most recently used, skipping
[16:20:32] INFO: Starting otbr-agent...
[NOTE]-AGENT---: Running 0.3.0-b067e5ac-dirty
[NOTE]-AGENT---: Thread version: 1.3.0
[NOTE]-AGENT---: Thread interface: wpan0
[NOTE]-AGENT---: Radio URL: spinel+hdlc+uart:///dev/serial/by-id/usb-Nabu_Casa_ZBT-2_DCB4D910E7BC-if00?uart-baudrate=460800&uart-flow-control
[NOTE]-AGENT---: Radio URL: trel://end0
[NOTE]-ILS-----: Infra link selected: end0
50d.11:51:58.580 [C] P-SpinelDrive-: Software reset co-processor successfully
00:00:00.053 [N] RoutingManager: BR ULA prefix: fd2c:95f3:deee::/48 (loaded)
00:00:00.053 [N] RoutingManager: Local on-link prefix: fdfc:57aa:8796:3ad1::/64
00:00:00.103 [N] Mle-----------: Role disabled -> detached
00:00:00.131 [N] P-Netif-------: Changing interface state to up.
00:00:00.152 [W] P-Netif-------: Failed to process request#2: No such process
00:00:00.153 [W] P-Netif-------: Failed to process request#6: No such process
00:00:00.176 [N] Mle-----------: Role detached -> child
00:00:00.176 [W] Mle-----------: Failed to process Child Update Response as child: NotFound
00:00:00.244 [W] P-Netif-------: Successfully added an external route fc00::/7 in kernel
00:00:00.245 [W] P-Netif-------: Successfully added an external route fda5:40d9:6dbc:2:0:0::/96 in kernel
s6-rc: info: service otbr-agent successfully started
s6-rc: info: service otbr-agent-configure: starting
Done
00:00:00.730 [W] P-Daemon------: Daemon read: Connection reset by peer
s6-rc: info: service otbr-agent-configure successfully started
s6-rc: info: service otbr-agent-rest-discovery: starting
00:00:03.150 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:a826, ecn:no, sec:yes, error:AddressQuery, prio:low, radio:all
00:00:03.150 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.150 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.150 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:c02d, ecn:no, sec:yes, error:AddressQuery, prio:low, radio:all
00:00:03.150 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.150 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.150 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:c02d, ecn:no, sec:yes, error:AddressQuery, prio:low, radio:all
00:00:03.150 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.150 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.150 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:ac22, ecn:no, sec:yes, error:AddressQuery, prio:low, radio:all
00:00:03.150 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.150 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.150 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:be2d, ecn:no, sec:yes, error:AddressQuery, prio:low, radio:all
00:00:03.150 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.150 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.379 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:a123, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.379 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.379 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.426 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:c437, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.426 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.426 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.497 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:9c1f, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.497 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.497 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.581 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:8c13, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.581 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.581 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:03.630 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:8c13, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.630 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.630 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
[16:20:35] INFO: Successfully sent discovery information to Home Assistant.
s6-rc: info: service otbr-agent-rest-discovery successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
00:00:03.945 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:7a0b, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:03.945 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:03.945 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:04.005 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:8f12, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:04.005 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:04.005 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:04.137 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:7e0b, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:04.137 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:04.137 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:04.152 [W] DuaManager----: Failed to perform next registration: NotFound
00:00:04.447 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:9312, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:04.447 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:04.447 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:06.356 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:7d0c, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:06.356 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:06.356 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:06.417 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:7d0c, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:06.417 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:06.417 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:07.763 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:9414, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:07.764 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:07.764 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
00:00:07.813 [N] MeshForwarder-: Dropping IPv6 UDP msg, len:58, chksum:9414, ecn:no, sec:yes, error:Drop, prio:low, radio:all
00:00:07.813 [N] MeshForwarder-: src:[fdb3:dbcb:a25:d3da:828a:f7ff:fe09:4135]:41041
00:00:07.813 [N] MeshForwarder-: dst:[fdbb:97de:1622:1:b751:557d:d645:a96e]:60222
>