On 07/17/2017 01:43 PM, Nate Bargmann wrote:
> ...
> I have the same. I have had some success with trying to map a physical
> port the dongle is attached to with a persistent name, and then the
> kernel, for reasons seemingly known only to it, reorders them and it all
> goes out the window.
> ...

On 07/17/2017 03:27 PM, G.W. Haywood wrote:
> ...
> You might be able to do something to differentiate between them if you
> plug them into different hubs, and look for the hub ID as well as the
> ttyUSB device. Many PCs have more than one internal hub installed,
> here's my laptop:
> ...

Thanks. It looks like this might be the way to go, but my initial
attempts haven't gone far. I'll keep looking around.

One thing that I have a question about still is the output from udev:

# /etc/init.d/udev restart
Stopping the hotplug events dispatcher: systemd-udevd.
Starting the hotplug events dispatcher: systemd-udevdstarting version 233

Is a udev restart enough to reload? How much systemd is in there?

Regards,
Lars