While really really bored, Martin Husemann wrote:
> How would you interface a dial-on-demand daemon to the kernel?
> I'll need such a daemon to manage ISDN connections, but I think a global
> approach which covers PPP and CSLIP connections as well would be 
> the way to go.

Some ISDN routers already support this (even for multiple connections, etc.)
with no OS support.  However, (as always) it's nicer to be able to change it
yourself in software.  And I am definitely interested in this - not sure I
can be of much help (maybe in the userland stuff, but not the kernel).
I am especially interested in using this for SLIP and PPP.  It seems like
this kind of automation is where Unix should be strong.
-- 
VaX#n8 (vak-sa-nate) - n, CS senior++ and Unix junkie - vax@ccwf.cc.utexas.edu
Vax es mi nombre, queso es mi juego.                  - PGP key on request