I checked what exactly is breaking things:
I'm not using the network manager, so I disconnected with ifdown; after ifup, my search domain list contained comma's again. So it is not just rebooting but every reconnection that is breaking things.
I checked what exactly is breaking things:
I'm not using the network manager, so I disconnected with ifdown; after ifup, my search domain list contained comma's again.
So it is not just rebooting but every reconnection that is breaking things.