Hello Roger,
thanks for your helpful tip.

On 12/14/21 12:14 PM, Roger Dingledine wrote:
> My first thought is that somehow during boot Tor fails to start. For
> example, if at that point in the boot process there is no network,
> maybe Tor aborts even before it gets to the point of writing anything
> in its logs. We've definitely had bugs like that over the years.

this was the one really helpful tip.

>
>> Any idea how to troubleshoot this and what to look for?
> Tor will write to stdout before it switches over to writing to the
> logs. So whatever init process is starting Tor can see that output. How
> exactly to get at it... sounds like an adventure diving into how systemd
> works.:)

And then the tip that it writes to stdout and might be some other output
besides from unit "tor".

I see the problem now, and I think it is like you guessed the network is
not ready at that time.

Thanks, will check further.