creating default route in kernel

[Waldemar Kornewald]

Hi,
could you please tell me how I can create a default route from within 
the kernel? I am a member of the Haiku (OS) networking team and 
maintainer of the PPP stack and for dial-on-demand support there must be 
a default route which does not work. BTW, we use a port of your netstack 
(from the 4.x releases, I think).
Which values should the default route get (netmask, destination, etc.) 
and which function(s) should I call (our PPP stack lives in the kernel)?

Thank you.

Bye,
Waldemar Kornewald