I'm having the same issue. ifup and ifdown also do not see the interface
either. ifconfig eth0 up|down both do work (this hits the kernel
directly so it's not surprising).
I'm a newbie to debian and just converting from RH/Fedora but I noticed
the /etc/network/interface file does not contain a ref
Update: I was able to the the "Network" GUI to work. It did write the
the file with the extra line "auto eth0" at the end (not something I've
seen in online examples). That said, ifup and ifdown still don't work
and "Configure" from the "Network Tools" interface still does not see
the interface.
I
