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I have two data connections. One is a USB Dongle with a high speed, limited data plan. The other is a broadband (over WiFi) slower, but unlimited data plan, connection. I want certain applications such as Software Updates to use only the WiFi connection for downloading whereas my browsers (Chromium, Firefox) to use the high speed connection.

Is it possible to force this selection on the applications ?

Also, in case one of the connections is not available, then everything should fall back on the other connection.

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marked as duplicate by hhlp, con-f-use, Chris Wilson, chronitis, Thomas Ward Mar 24 '13 at 15:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

That is not possible in the way you describe, but you can get somewhere by manually adding routes. Say you use, you can add a route for to go via the wifi and leave the default route to be the dongle.

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