I upgraded a CCR from 6.13 to 6.21rc22 and the router started rebooting on its own every minute. Was able to see in the logs that the router rebooted itself due to a kernel error but had to quickly go back to a stable version (now 6.20) as it was a production router.
Ok, we will have to wait until after hours again to repeat this exercise. There is only 60 seconds between crashes so I need to try to capture everything fast, upload the stable version and downgrade. I will try and email support when done.
I just upgrade two CCR1036 to v6.21.1 and lost access to routers. They keep rebooting at each couple of seconds and never go back.
Only netinstall could solve the problem.
Email to support is on the way.
Did you find a solution to this as I have a ccr that does this under load. If nothing is connected to its ports it is fine so something has to be triggering it.