This error is popping up from the desktop that runs Ubuntu ONLY to service the Nano and TX2 (TX2 not converted yet.) It must have something to do with the way the SDKManager sets up the artificial USB “network” to the Nano, but danged if I can figure out how to turn it off.
The error is generated by the fiber modem and will not allow the desktop to “log on to the internet.” Meaning I can’t even run apt update. I can ping from the desktop but can’t run anything useful that has to connect to the internet, including the nano utilities. The ONLY reason I put ubuntu on a desktop is to service the nano, due to the restrictions imposed by nVidia.
There is --no-- secondary router on my household 'net as I only use switches. Further, the 8-way switch that is on the ubuntu desktop ALSO has a monitor, the Nano, a Debian desktop, and sometimes an RPi or two on it and none of them generate this ‘router behind router’ error.
Please advise on how to clear away this problem so I can use the ubuntu desktop as nVidia intends.