Date: Mon, 20 Mar 2000 02:40:39 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: "Dan O'Connor" <dan@mostgraveconcern.com> Cc: Troy Settle <troy@picus.com>, freebsd-questions@FreeBSD.ORG Subject: Re: IPFW Pipes / dummy net Message-ID: <20000320024039.B72331@hades.hell.gr> In-Reply-To: <0b8f01bf91ca$7a0da880$0200000a@danco>; from dan@mostgraveconcern.com on Sun, Mar 19, 2000 at 09:42:13AM -0800 References: <0b8f01bf91ca$7a0da880$0200000a@danco>
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On Sun, Mar 19, 2000 at 09:42:13AM -0800, Dan O'Connor wrote: > > ipfw add 70000 allow ip from any to any > > > >I got a rule with number 4464. Now this is a strange number of rule to > >get from 70000, but if one sees the two numbers in hex, it's obvious why > >it was done so. > > > >The number 70000 = 0x11170, when AND'ed with a 16-bit mask, 0xffff, > >gives 0x1170 = 4464 :) > > Well, you don't even need to do any convoluted math to see that this is a > simple rollover problem, since > > 70,000 - 65536 = 4464. I guess I should start thinking in decimal once more. Bloody CS departments, they do change the way one counts more often than not these days... - Giorgos Keramidas To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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