Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 13 Aug 2015 18:22:53 +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:  <932331439479373@web29h.yandex.ru>
In-Reply-To: <CA%2BhQ2%2Bi1qiE883yrSbZowg9WvtKB67TTgNp7pqT9ib60Nuri0w@mail.gmail.com>
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>

next in thread | previous in thread | raw e-mail | index | archive | help
13.08.2015, 18:21, "Luigi Rizzo" <rizzo@iet.unipi.it>:
> On Thu, Aug 13, 2015 at 5:18 PM, Julian Elischer <julian@freebsd.org> wrote:
>> šOn 8/13/15 10:41 PM, Ian Smith wrote:
>>> šOn Thu, 13 Aug 2015 16:30:15 +0200, Luigi Rizzo wrote:
>>> ššš> On Thu, Aug 13, 2015 at 4:00 PM, Ian Smith <smithi@nimnet.asn.au>
>>> šwrote:
>>> ššš> > On Thu, 13 Aug 2015 12:24:31 +0800, Julian Elischer wrote:
>>> ššš> > > BTW, any ideas as to what causes this?
>>> ššš> > > # ipfw show
>>> ššš> > > [...]
>>> ššš> > > 00400 0 0 deny ip from 10.12.1.0/24 to
>>> šany in recv
>>> ššš> > > xn0
>>> ššš> > > 00500 0 16045693110842147038 deny ip from 204.109.63.0/25 to
>>> šany in recv
>>> ššš> > > xn1
>>> ššš> > > 00600 0 0 allow ip from any to any in
>>> šrecv xn1
>>> ššš> > > [...]
>>> ššš> > > 65535 8251 16045693110842147290 deny ip from any to any
>>> ššš> > >
>>> ššš> > >
>>> ššš> > > -current as of the 5th of august
>>> ššš> > > FreeBSD vps1.elischer.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1
>>> šr286304: Wed
>>> ššš> > > Aug 5 14:31:10 PDT 2015
>>> ššš> > > root@vps1.elischer.org:/usr/obj/usr/src-current/sys/VPS1 i386
>>> ššš> > >
>>> ššš> > > note i386, not amd64.
>>> ššš> >
>>> ššš> > Assuming all digits were shown, on a wild hunch:
>>> ššš> >
>>> ššš> > t23% echo 'scale=20; 2^64 - 16045693110842147038' | bc
>>> ššš> > 2401050962867404578
>>> ššš> > t23% echo 'scale=20; 2^63 - 16045693110842147038' | bc
>>> ššš> > -6822321073987371230
>>> ššš> >
>>> ššš>
>>> ššš> bc
>>> ššš> obase=16
>>> ššš> 16045693110842147038
>>> ššš> DEADC0DEDEADC0DE
>>> ššš>
>>> ššš> so... somehow pointing in a bad place.
>>>
>>> šAh, quite so .. and rule 65535 looks like a slightly worse place.
>>>
>>> št23% echo 'obase=16; 16045693110842147290' | bc
>>> šDEADC0DEDEADC1DA
>>
>> šthat's deadcode when it's had some packets added to it :-)
>>
>> šI think our friend Mr Chernikov may have tripped up over something..
>
> looks 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..
>
> cheers
> luigi
>
>>> šthanks, Ian
>>
>> š_______________________________________________
>> šfreebsd-ipfw@freebsd.org mailing list
>> šhttps://lists.freebsd.org/mailman/listinfo/freebsd-ipfw
>> šTo unsubscribe, send any mail to "freebsd-ipfw-unsubscribe@freebsd.org"
>
> --
> -----------------------------------------+-------------------------------
> šProf. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
> šhttp://www.iet.unipi.it/~luigi/ . Universita` di Pisa
> šTEL +39-050-2217533 . via Diotisalvi 2
> šMobile +39-338-6809875 . 56122 PISA (Italy)
> -----------------------------------------+-------------------------------



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?932331439479373>