Hello Jon,
Thank you for your help.
But I think it’s complicated. If the system can do a test or try to reconnect after a timeout, every time it is not connected, this capability would be good. I will try to implement a script for this. But I think the ipfire system could be more fast to reconnect red0 interface. Before the update to 139/141, the system always did reconection with success after a reboot, but now it’s not working properly.