Later, I don't know yet. After mine rc.d scripts didn't work correctly, I had a short glance on the git diff, seen that there are respective changes, restored the old binary and this one works now.
But there are more issues, and I would like to get back online first before in-depth analysis. This one can now be analyzed elsewhere.
I have a more ugly one: If you start a vnet jail, you need an interface on the host that gets put into the jail. When you stop that jail again, the interface should come back to the host.
It usually does, but now, when you happen to start an openvpn in that jail, only once, then when later stopping the jail, the interface disappears. For whatever reason, I have no idea yet, and /usr/sbin/jail isn't very talkative.