Dunfell uses zephyr v2.7.0. It turned out the ot-agent changed between yocto releases and we must not pass the uart-reset parameter to it anymore but it took me a while to figure out.
Zephyr version not pinned to the yocto release: we decided to pin zephyr v3.1 to kirkstone but that required us to bump upstream release to v3.1 but then it turned out upstream zephyr build is broken. I finished adding v3.1 support to meta-zephyr locally in oniro, upstream is still blocked by the build failure - working on it.
I ported the gateway linux blueprint but still need to port the OT node blueprint (part of the gateway really) and antenna based on arduino nano 33 ble and not the other nrf dongle.
The gateway and the OT antenna blueprints are now correctly ported. The zephyr node has been moved to eclipse and updated to build with zephyr v3.1 but still has Kconfig warnings with yocto. Working on it.