openthread_border_router: Bump OTBR to v2026.08.0 (stable) / v2026.09.0 (beta)

openthread_border_router/CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## 3.2.0
+
+- Bump to OTBR POSIX version 337711e7 (tag v2026.08.0)
+  - Improved startup robustness: multicast router setup is retried on transient errors
+  - Various fixes and stability improvements in OpenThread
+- Bump beta to OTBR POSIX version fd872ab9 (tag v2026.09.0)
+  - Thread 1.4 Credentials Sharing (ePSKc): share Thread network credentials with other devices directly from the Web UI
+  - Web UI: QR codes are now generated locally instead of using a remote service
+  - Upstream DNS resolution for Thread devices is now fixed in OpenThread itself (the workaround from 3.1.2 remains in place for stable)
+  - Various fixes and stability improvements in OpenThread and OTBR
+  - On OpenThread reset (e.g. when forming or joining a network through the OpenThread Web UI), the app runtime configuration (TREL, NAT64, mDNS, TX power) is now re-applied cleanly on every start
+
 ## 3.1.2
 
 - Fix upstream DNS/DNS64 resolution for Thread devices by not binding the upstream DNS resolver socket to the infra interface (fixes #3947, regression since 2.12.0)

openthread_border_router/Dockerfile

@@ -81,6 +81,7 @@ RUN \
         -DOT_THREAD_VERSION=1.4 \
         -DOT_PROJECT_CONFIG="/usr/src/ot-br-posix/third_party/openthread/repo/openthread-core-ha-config-posix.h" \
         -DOT_RCP_RESTORATION_MAX_COUNT=2 \
+        -DOTBR_PLATFORM_RESET_EXIT=ON \
     && ninja \
     && ninja install
 

openthread_border_router/build.yaml

@@ -3,7 +3,7 @@ build_from:
   aarch64: ghcr.io/home-assistant/aarch64-base-debian:trixie
   amd64: ghcr.io/home-assistant/amd64-base-debian:trixie
 args:
-  OTBR_BETA_VERSION: d83ddc62ecbb3d8a766ce3f1c58d6362d793d70b
-  OTBR_VERSION: ec16e396382b4559e70a2c6fdeecb7d596a5e915
+  OTBR_BETA_VERSION: fd872ab9d4afdfaf034b3b1154fed08b8b6d1e43
+  OTBR_VERSION: 337711e7038d0b9c8fb46a1ce888ce7f9c4c0c35
   UNIVERSAL_SILABS_FLASHER_VERSION: 0.1.2
   SERIALX_VERSION: 1.8.0

openthread_border_router/config.yaml

@@ -1,5 +1,5 @@
 ---
-version: 3.1.2
+version: 3.2.0
 breaking_versions: [3.0.0]
 slug: openthread_border_router
 name: OpenThread Border Router

openthread_border_router/openthread-core-ha-config-posix.h

@@ -94,6 +94,12 @@
  * queries out the physical interface, breaking upstream DNS/DNS64 for
  * Thread devices. Disable the bind so queries follow the host routing
  * table (see home-assistant/addons#3947).
+ *
+ * OpenThread 82eb4863a (openthread/openthread#13545, included in OTBR
+ * v2026.09.0 and later) fixes this upstream: resolv.conf nameservers are no
+ * longer bound to the infra interface, and this option only governs
+ * RDNSS-discovered servers. Keep the define until the stable build has
+ * picked up that fix, then drop it.
  */
 #define OPENTHREAD_POSIX_CONFIG_UPSTREAM_DNS_BIND_TO_INFRA_NETIF 0
 

openthread_border_router/rootfs/etc/s6-overlay/s6-rc.d/otbr-agent/data/check

@@ -7,3 +7,9 @@ test -S /run/openthread-wpan0.sock
 # Check REST API port is open
 mapfile -t < /tmp/otbr-agent-rest-api
 nc -z "${MAPFILE[@]}"
+
+# Apply runtime configuration (TREL, NAT64, mDNS, TX power) before reporting
+# the service as ready. Running this here (rather than as a oneshot) ensures the
+# configuration is re-applied whenever s6 restarts otbr-agent, e.g. after a
+# platform reset.
+/etc/s6-overlay/scripts/otbr-agent-configure.sh

openthread_border_router/rootfs/etc/s6-overlay/s6-rc.d/otbr-agent/finish

@@ -13,6 +13,8 @@ fi
 if test "$e" -ne 0; then
     bashio::log.warning "otbr-agent exited with code $e (by signal $2)."
 else
+    # A clean exit also happens on platform reset (e.g. reset/factoryreset),
+    # in which case s6 restarts the service.
     bashio::log.info "otbr-agent exited with code $e (by signal $2)."
 fi