I'm not sure if this is a bug, or maybe this should be documented a lot better because I spent some time on this.
Probably caused by
no longer listens on both ipv4 and ipv6 like it did before. It now only listens on ipv6, causing unexpected "Connection Refused" errors when connecting through ipv4.
bind_address = ::
Previously mariadb listened on
, in 10.6 this became