On Sat, 2006-01-04 at 14:29 +0200, Stefan Rompf wrote:
> Am Samstag 01 April 2006 12:27 schrieb David S. Miller:

> >
> > Routing is a pretty basic network feature, yet userspace manages it
> > and the kernel just does the switching.
> 
> That's comparing apples with pies. For the average machine, userspace sets up 
> routing once, afterwards the kernel can do basic IPv4 communication without 
> further help. ARP in difference requires regular time critical activity to 
> keep a system reachable within one broadcast domain.
> 
> Comparable to putting ARP resolution to userspace would be moving anything 
> beyond the very basic routing cache out of the kernel.
> 

No stefan - check arpd. Infact if you really want to scale ARP to many
many entries, you do it in user space. This has been proven more than
once in the past: Thats the main reason the current daemons exist. It is
a kernel config, so it doesnt totaly take it out; however, given that
you scale because you are in user space, provides good a reason to take
it out.

cheers,
jamal

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