From: Mike Wright <mike.wright@mailinator.com>
To: Mr Dash Four <mr.dash.four@googlemail.com>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>, netfilter@vger.kernel.org
Subject: Re: ipporthash, ipportiphash, ipportnethash problems
Date: Wed, 06 Oct 2010 07:37:06 -0700 [thread overview]
Message-ID: <4CAC8992.2030708@mailinator.com> (raw)
In-Reply-To: <4CAC866D.7060101@googlemail.com>
Mr Dash Four wrote:
>
>>> So I should not use IP_NF_SET_HASHSIZE for the time being until it is
>>> fixed,
>>> right?
>>>
>>
>> Yes, because currently it's ignored. In this week I'm going to fix it
>> in the git repository but won't release a new version just for this.
>>
> There is another issue I found when using ipmap sets: when I execute,
> for example, "ipset -N port-map ipmap --from 10 --to 30000" and then add
> an element "ipset -A port-map 20" the two statements are accepted
> without any error given (they shouldn't be as the map defined is an IP
> map, not a port map and the values submitted are numbers, not IP
> addresses)!
>
> When I issue "ipset -L port-map" I get:
>
> Header: from: 0.0.0.10 to: 0.0.117.48
> members:
> 0.0.0.20
>
> Is this deliberate or a bug?
It's deliberate.
The numbers are treated as modulo 256.
30,000 / 256 = 117.1875
.1875 * 256 = 48
Thus the whole number parts become segments of the quad: 117.48
next prev parent reply other threads:[~2010-10-06 14:37 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-30 22:03 ipporthash, ipportiphash, ipportnethash problems Mr Dash Four
2010-10-01 7:18 ` Jozsef Kadlecsik
2010-10-01 11:22 ` Mr Dash Four
2010-10-01 21:05 ` Jozsef Kadlecsik
2010-10-02 10:36 ` Mr Dash Four
2010-10-02 19:21 ` Jozsef Kadlecsik
2010-10-02 20:08 ` Mr Dash Four
2010-10-02 20:40 ` Jan Engelhardt
2010-10-02 20:54 ` Mr Dash Four
2010-10-02 21:06 ` Jan Engelhardt
2010-10-03 18:57 ` Jozsef Kadlecsik
2010-10-03 22:02 ` Mr Dash Four
2010-10-02 20:35 ` Mr Dash Four
2010-10-03 19:13 ` Jozsef Kadlecsik
2010-10-03 22:04 ` Mr Dash Four
2010-10-04 9:36 ` Jozsef Kadlecsik
2010-10-06 14:23 ` Mr Dash Four
2010-10-06 14:37 ` Mike Wright [this message]
2010-10-06 15:26 ` Mr Dash Four
2010-10-06 19:57 ` Jozsef Kadlecsik
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