ping through ipfw giving unexpected results

[Chuck Swiger]

On Nov 28, 2006, at 12:07 PM, gschultz at scriptpro.com wrote:
> I tried this at plr's from 0.002 up to 0.47, and did the math:   
> ping is
> failing exactly (allowing for statistical variation) 1.500 times more
> than expected.  This is too unlikely to be chance, so I figure the  
> nice
> round fraction of additional failures is due to something I don't yet
> understand.  Can anyone explain this result?  Thanks.

Sounds like your rules are also being applied to the ICMP response,  
as well?

If you have plr = .25, there's a .75 chance that the request will go  
through; if the request does go through, there will be a .75 chance  
that the reply will also get back, for a total .25 + .75 * .25 == . 
4375 chance of no answer getting through...?

-- 
-Chuck