Hi, I've been testing migrating to bird3. I preferred to redefine the default threading configs so that everything is explicit, rather than implicit. But, when I defined the ¬eress" group, I got the following warning logged: <WARN> Symbol 'express' overrides existing keyword Rather than create create needless log lines, I though I would fix that by creating my own custom thread group instead, and use that for BFD. I created: thread group responsive { threads 1; max latency 10 ms; min time 1 ms; max time 10 ms; wakeup time 60 s; } protocol bfd { thread group responsive; interface "net0" { interval 1000 ms; multiplier 4; }; interface "net1" { interval 1000 ms; multiplier 4; }; } However, the config validation then throws the following error: <FATAL> Express thread group not configured and "express" not found Is this a bug, or something I'm doing wrong ? Thanks! Cheers, Just -- Notice: This email is confidential and may contain copyright material of members of the Ocado Group. Opinions and views expressed in this message may not necessarily reflect the opinions and views of the members of the Ocado Group. If you are not the intended recipient, please notify us immediately and delete all copies of this message. Please note that it is your responsibility to scan this message for viruses. References to the "Ocado Group" are to Ocado Group plc (registered in England and Wales with number 7098618) and its subsidiary undertakings (as that expression is defined in the Companies Act 2006) from time to time. The registered office of Ocado Group plc is Buildings One & Two, Trident Place, Mosquito Way, Hatfield, Hertfordshire, AL10 9UL. Ocado Polska Sp. z o.o. posiada status dużego przedsiębiorcy w rozumieniu ustawy o przeciwdziałaniu nadmiernym opóźnieniom w transakcjach handlowych. / Ocado Polska Sp. z o.o. holds the status of a large enterprise under the Act on Counteracting Excessive Delays in Commercial Transactions.