ROS Disabling Bridge Sub Interfaces ...???

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I have Routerboard 532 ROS 2.9.24, I have multiple bridges among Vlans. I have a situation where ROS automaticly disables ports assigned to a particular bridge. This ports happen to be vlans.

We have this setup running in about 30 ROS Routers and this is the only place I have seen this behavior.

What would be the conditions under ROS would do such action ? I need to debug this …