[xubuntu-users] 'Bouncing' USB-Ethernet connection

[Chris Green]

I am trying to use a USB-ethernet adapter to give me a second ethernet
connection to an xubuntu 14.04 system.

It's detected OK and drivers are loaded but Network Manager goes into  
a loop repeatedly saying the connection has been established and then
saying it's disconnected.  It cycles once very few seconds, say 10
seconds or so.

It's set up with a static IP on a different subnet from the 'proper'
ethernet.

Does anyone have any idea what might be wrong?

-- 
Chris Green