From: Stephen Clark <sclark46@earthlink.net>
To: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: inconsistent address treatment.
Date: Fri, 24 Dec 2010 10:32:21 -0500 [thread overview]
Message-ID: <4D14BD05.8020509@earthlink.net> (raw)
In-Reply-To: <4D1457D5.3040305@plouf.fr.eu.org>
On 12/24/2010 03:20 AM, Pascal Hambourg wrote:
> Stephen Clark a écrit :
>
>> On 12/23/2010 02:52 PM, Pascal Hambourg wrote:
>>
>>> Stephen Clark a écrit :
>>>
>>>
>>>> Why the inconsistency in the way addresses are treated. I can use -d
>>>> 2.2.2.2/32
>>>> but not --to-source 205.201.149.214/32
>>>>
>>>>
>>> Because -d takes a prefix and --to-source takes an address range.
>>>
>> So? you can't parse
>>
>> 205.201.149.214/32-205.201.149.218/32
>>
> a.b.c.d/32 is a prefix notation, even though it represents a single
> address. IMO it does not make sense to use a prefix notation in an
> interval, so I don't see why the parser should handle it. AFAICS, other
> commands such as 'ip' from iproute don't accept /32 prefixes where a
> single address is expected either.
>
Well It is just one more idiosyncrasy one has to remember, when to me there
is no obvious reason for it to be so. It also means if you are writing
some kind
of automated tool to create rules for iptables from a set of address objects
then you have remember, Oh I have to drop the /32 if this object is used
as an argument for --to-source. That means everyone that trys to develop
an automated tool has to deal with this anomaly instead of being dealt with
in one place, the parser for iptables.
--
"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety." (Ben Franklin)
"The course of history shows that as a government grows, liberty
decreases." (Thomas Jefferson)
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next prev parent reply other threads:[~2010-12-24 15:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-23 14:12 inconsistent address treatment Stephen Clark
2010-12-23 19:52 ` Pascal Hambourg
2010-12-23 22:45 ` Stephen Clark
2010-12-24 8:20 ` Pascal Hambourg
2010-12-24 15:32 ` Stephen Clark [this message]
2010-12-24 21:48 ` Jan Engelhardt
2010-12-26 12:10 ` Amos Jeffries
2010-12-26 12:47 ` Jan Engelhardt
2010-12-26 18:35 ` Stephen Clark
2010-12-26 21:43 ` Pascal Hambourg
2010-12-26 22:16 ` Jan Engelhardt
2011-01-08 4:20 ` Amos Jeffries
2011-01-08 12:32 ` Jan Engelhardt
2010-12-23 21:53 ` Jan Engelhardt
2010-12-23 22:43 ` Stephen Clark
2010-12-24 8:46 ` Jan Engelhardt
2010-12-24 15:34 ` Stephen Clark
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