Because it would be _extremely_ inefficient and quite complicated.  Look
at the kernel level NFS server and client (you'd need both mechanisms to
deal with downcalls). 

- Peter -

On Tue, 8 Dec 1998, Sergio Romano wrote:

> Does anybody knows why is the communication between 
> coda.o and venus implemented with a device (/dev/cfs0)
> instead of using an udp socket? 
> 
> tia,
> 
> Sergio Romano
> 
>