> Thank you Robert!  That is very helpful.   For my wired NIC connections 
> interfaces is dead simple.  I can see the advantage of connman for wifi.

Yeah, today for a wired connection, not using "connman" works fine.

But there was a time about 2-3 years ago..  That Debian/Ubuntu had a
really crappy ifupdown network setting, that forced you into a 2
minute wait (timeout) on bootup before the login prompt would become
available... Unless your ethernet port was connected, then login
appeared instantly..

Swapping from "auto eth0" to "allow-hotplug eth0" made zero difference
at the time.  I remember supporting 2 boards with one image back
then.. The original BeagleBoard (with no default ethernet) and the xM
with a usb-ethernet adapter..  It really sucked trying to support that
configuration, as we had to have "eth0" defined in
/etc/network/interfaces so the xM would have working ethernet.  Yet at
the same time hack up teh ifup scripts to remove the 2 minute timeout
so the non ethernet BeagleBoard, would still bootup quiclly to a login
prompt.

Once we swapped to connman, connman took care of those two cases pretty easily..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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