Lost network access in machine…

[rcfa]

So I set up a kali machine, added some packages from the kali repository with the standard apt mechanism.
So at some point later I notice, I have no more internet access from the machine.

I created another kali machine instance, just to make sure, it's not a Mac or Orbstack issue, it's not: the new machine can access the internet just fine.

So it seems, that something that was installed stepped onto whatever special sauce Orbstack uses to configure the network of machine instances.

Thus my questions:

• how does eth0 get configured? (Even after I manually bring up the eth0 interface with ip link change eth0 up connectivity is down, as trying to ssh into the LAN IP of the mac fails (while it works just fine in my test instance))
• what do I need to avoid to get myself into such trouble?
• I notice that addresses of these machines are assigned in the 198.19.249.0/24 range. Why? Why not in the 10.0.0.0/8 or 192.168.0.0/16 range?