On Tue, Nov 10, 2009 at 10:09:10AM -0000, Andrew Oakley wrote:
> The last bit is probably the bit that I'm having the most trouble with.
> Once the 3G is up, it is entirely possible that I could ping my ADSL
> ISP's gateway from the 3G connection. So simply getting a reply from the
> ping test is no guarantee that ADSL is back online. Maybe some kind of
> traceroute test? Or force a ping over a particular ETH, how?

man ping says that you can tell ping which interface to send on with
-I and then the address or interface name. 

   Robert

________________________________________________________________________
Robert McWilliam            r...@allmail.net             www.ormiret.com

History will be kind to me, for I intend to write it 
        - Sir Winston Churchill

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