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Date:      Thu, 13 Aug 2015 16:30:15 +0200
From:      Luigi Rizzo <rizzo@iet.unipi.it>
To:        Ian Smith <smithi@nimnet.asn.au>
Cc:        Julian Elischer <julian@freebsd.org>,  "freebsd-ipfw@freebsd.org" <freebsd-ipfw@freebsd.org>, "Alexander V. Chernikov" <melifaro@ipfw.ru>
Subject:   Re: ipfw delete 100-300
Message-ID:  <CA%2BhQ2%2Bg-kU9U1nK-EOiuoEkBF=SAaX=RBETW69K%2BNrLAcQK1Ew@mail.gmail.com>
In-Reply-To: <20150813233624.P8515@sola.nimnet.asn.au>
References:  <55BF368A.60004@elischer.org> <20150803234952.O17327@sola.nimnet.asn.au> <925201438613458@web7h.yandex.ru> <55BFC7A7.2000907@freebsd.org> <252361438673995@web5h.yandex.ru> <55CC1BFF.5090800@freebsd.org> <20150813233624.P8515@sola.nimnet.asn.au>

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On Thu, Aug 13, 2015 at 4:00 PM, Ian Smith <smithi@nimnet.asn.au> wrote:
> On Thu, 13 Aug 2015 12:24:31 +0800, Julian Elischer wrote:
>  > BTW, any ideas as to what causes this?
>  > # ipfw show
>  > [...]
>  > 00400      0                    0 deny ip from 10.12.1.0/24 to any in recv
>  > xn0
>  > 00500      0 16045693110842147038 deny ip from 204.109.63.0/25 to any in recv
>  > xn1
>  > 00600      0                    0 allow ip from any to any in recv xn1
>  > [...]
>  > 65535   8251 16045693110842147290 deny ip from any to any
>  >
>  >
>  > -current as of the 5th of august
>  > FreeBSD vps1.elischer.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r286304: Wed
>  > Aug  5 14:31:10 PDT 2015
>  > root@vps1.elischer.org:/usr/obj/usr/src-current/sys/VPS1  i386
>  >
>  > note i386, not amd64.
>
> Assuming all digits were shown, on a wild hunch:
>
> t23% echo 'scale=20; 2^64 - 16045693110842147038' | bc
> 2401050962867404578
> t23% echo 'scale=20; 2^63 - 16045693110842147038' | bc
> -6822321073987371230
>

 bc
obase=16
16045693110842147038
DEADC0DEDEADC0DE

so... somehow pointing in a bad place.

> Wrongly (un?)signed int64?  Either way, a lot of bytes for 0 packets :)
>
> cheers, Ian
> _______________________________________________
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-- 
-----------------------------------------+-------------------------------
 Prof. Luigi RIZZO, rizzo@iet.unipi.it  . Dip. di Ing. dell'Informazione
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 TEL      +39-050-2217533               . via Diotisalvi 2
 Mobile   +39-338-6809875               . 56122 PISA (Italy)
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