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Date:      Sat, 15 Aug 2015 00:48:48 +0300
From:      Alexander V. Chernikov <melifaro@ipfw.ru>
To:        Luigi Rizzo <rizzo@iet.unipi.it>, Julian Elischer <julian@freebsd.org>
Cc:        Ian Smith <smithi@nimnet.asn.au>, "freebsd-ipfw@freebsd.org" <freebsd-ipfw@freebsd.org>
Subject:   Re: ipfw delete 100-300
Message-ID:  <120111439588928@web12j.yandex.ru>
In-Reply-To: <932331439479373@web29h.yandex.ru>
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> <CA%2BhQ2%2Bg-kU9U1nK-EOiuoEkBF=SAaX=RBETW69K%2BNrLAcQK1Ew@mail.gmail.com> <20150814003533.I8515@sola.nimnet.asn.au> <55CCB543.20504@freebsd.org> <CA%2BhQ2%2Bi1qiE883yrSbZowg9WvtKB67TTgNp7pqT9ib60Nuri0w@mail.gmail.com> <932331439479373@web29h.yandex.ru>

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13.08.2015, 18:22, "Alexander V. Chernikov" <melifaro@ipfw.ru>:
> 13.08.2015, 18:21, "Luigi Rizzo" <rizzo@iet.unipi.it>:
>> šOn Thu, Aug 13, 2015 at 5:18 PM, Julian Elischer <julian@freebsd.org> wrote:
>>> ššOn 8/13/15 10:41 PM, Ian Smith wrote:
>>>> ššOn Thu, 13 Aug 2015 16:30:15 +0200, Luigi Rizzo wrote:
>>>> šššš> On Thu, Aug 13, 2015 at 4:00 PM, Ian Smith <smithi@nimnet.asn.au>
>>>> ššwrote:
>>>> šššš> > On Thu, 13 Aug 2015 12:24:31 +0800, Julian Elischer wrote:
>>>> šššš> > > BTW, any ideas as to what causes this?
>>>> šššš> > > # ipfw show
>>>> šššš> > > [...]
>>>> šššš> > > 00400 0 0 deny ip from 10.12.1.0/24 to
>>>> ššany in recv
>>>> šššš> > > xn0
>>>> šššš> > > 00500 0 16045693110842147038 deny ip from 204.109.63.0/25 to
>>>> ššany in recv
>>>> šššš> > > xn1
>>>> šššš> > > 00600 0 0 allow ip from any to any in
>>>> ššrecv xn1
>>>> šššš> > > [...]
>>>> šššš> > > 65535 8251 16045693110842147290 deny ip from any to any
>>>> šššš> > >
>>>> šššš> > >
>>>> šššš> > > -current as of the 5th of august
>>>> šššš> > > FreeBSD vps1.elischer.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1
>>>> ššr286304: Wed
>>>> šššš> > > Aug 5 14:31:10 PDT 2015
>>>> šššš> > > root@vps1.elischer.org:/usr/obj/usr/src-current/sys/VPS1 i386
>>>> šššš> > >
>>>> šššš> > > note i386, not amd64.
>>>> šššš> >
>>>> šššš> > Assuming all digits were shown, on a wild hunch:
>>>> šššš> >
>>>> šššš> > t23% echo 'scale=20; 2^64 - 16045693110842147038' | bc
>>>> šššš> > 2401050962867404578
>>>> šššš> > t23% echo 'scale=20; 2^63 - 16045693110842147038' | bc
>>>> šššš> > -6822321073987371230
>>>> šššš> >
>>>> šššš>
>>>> šššš> bc
>>>> šššš> obase=16
>>>> šššš> 16045693110842147038
>>>> šššš> DEADC0DEDEADC0DE
>>>> šššš>
>>>> šššš> so... somehow pointing in a bad place.
>>>>
>>>> ššAh, quite so .. and rule 65535 looks like a slightly worse place.
>>>>
>>>> ššt23% echo 'obase=16; 16045693110842147290' | bc
>>>> ššDEADC0DEDEADC1DA
>>>
>>> ššthat's deadcode when it's had some packets added to it :-)
>>>
>>> ššI think our friend Mr Chernikov may have tripped up over something..
>>
>> šlooks more like the "counter" API. The old counters were inline in the rules.
>
> In that case we would probably have garbage in pkts counter, too.
> Anyway, I'm setting up the VM to see if this is kernel or userland problem..
This is actually counters-related problem.
The attached diff should fix it. 
(But it looks like I'd better get a bit more counter(9) support for that case).

>> šcheers
>> šluigi
>>
>>>> ššthanks, Ian
>>>
>>> šš_______________________________________________
>>> ššfreebsd-ipfw@freebsd.org mailing list
>>> ššhttps://lists.freebsd.org/mailman/listinfo/freebsd-ipfw
>>> ššTo unsubscribe, send any mail to "freebsd-ipfw-unsubscribe@freebsd.org"
>>
>> š--
>> š-----------------------------------------+-------------------------------
>> ššProf. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
>> ššhttp://www.iet.unipi.it/~luigi/ . Universita` di Pisa
>> ššTEL +39-050-2217533 . via Diotisalvi 2
>> ššMobile +39-338-6809875 . 56122 PISA (Italy)
>> š-----------------------------------------+-------------------------------
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