Hi Cormac
I'd suggest using the TUN/TAP device rather than ETHERTAP. You should
upgrade the kernel from the default Woody one, but you probably don't
need to compile a new one yourself. (disclaimer: I'm not all that
familiar with TUN/TAP support in current Debian kernels).
If you need to create ETHERTAP or TUN/TAP devices you can do it yourself
with mknod. For example, for the TUN/TAP device you need to do:
mknod /dev/net/tun c 10 200
And then set appropriate permissions so that the user running the UML
can use it.
I've found the descriptions on http://uml.openconsultancy.com/ very
helpful in the past, and http://user-mode-linux.sf.net/networking.html
is also a useful resource.
You might also find the init/control scripts I've written helpful:
http://cagraidsvr06.cs.tcd.ie/distribution/umlinux/uml-host/
They're a bit specific to our setup in places (RedHat 7.3, using LCFG
(http://www.lcfg.org/) as an install system) but should be hackable to
meet your needs. There's some (incomplete and out-of-date) documentation
here: http://www.cs.tcd.ie/David.OCallaghan/grid/uml-lcfgng.pdf
David
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