sense_link -- Sense if an ethernet cable is plugged into the jack at the physical layer<hr>
<a href="http://www.flygirl.com/sense_link.c">http://www.flygirl.com/sense_link.c</a><hr>
Lisa Corsetti, the author of the code said: While still at VA I threw a
small program together for this very reason.  Since we were using DHCP,
the laptop would take forever to boot (trying to get a dhcp address)
if there were no cable plugged in. [svlug mailing list, 1 May 2003]
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