CMK 2 - SmartPing

With CMK 2 that SmartPing problem on down hosts is back as some other sent/received packages are misinterpreted as an SmartPing package.
I saw this today at some server reboots

First comes the smart ping down message then some smart ping up message without the machine running and again after this the next smart ping down message.

Only after changing the host check to normal ping all is working as expected.

we have a similar problem with smartping. Systems that are definitely down keep showing up on the stale hosts… a short time later, they disappear there again.
But we have this already in the 1.6 and the Checkmk-Support could reproduce it afaik. No idea if this could be the identical problem…