Not really sure how it is crashing because I am not near the devices, but they are requiring power-cycles. Anyone else seen anything like this with 6.8rc1?

I am going to try to get some more info once I am on site and I can get a supout.

All my L2TP tunnels don't work anymore on this version.

Something very broken.

what build-date you are using? Check if newer version is available.

what build-date you are using? Check if newer version is available.

It was the latest on MikroTik.com.... I see there is a new version now though.

I did not notice what build date I tried at the time. I simply downloaded from the site.

Was there an L2TP issue in different build dates of 6.8rc1?

If so, I will re-try my tests with the current build date.

I've heard from Mikrotik this release should fix the NAT issues with L2TP. This may be what you're seeing, if you have workarounds in place for it.