On Tue, 9 Sep 2003, Josh Brooks wrote:

> 
> 
> 
> On Tue, 9 Sep 2003, Luigi Rizzo wrote:
> 
> > no, it is not possible to delete them -- you have no way to tell
> > which rule to delete when multiple rules share the same number.
> 
> Are there any plans to make ipfw more flexible by changing the 65535 to
> the next power of two ?  So there are a lot more rules ?

The rule number is only 16 bits long..

This is made use of in 'divert' where the rule number that caused the
divert is in the port-number field when you do a recvfrom().
if you change this, it won't work..

On "sendto()" teh rule number is used to suggest where the packet
"re-enters" the filter. if you pass it back unchanged then 
it reenters the filter at the next rule after the one that diverted it..
(i.e. where it left off)


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