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Date:	Fri, 25 Jan 2008 15:37:53 +0100
From:	Daniel Lezcano <>
To:	"Denis V. Lunev" <>
CC:	"Denis V. Lunev" <>,,,,
Subject: Re: [PATCH 3/7 net-2.6.25] [IPV4]: Prohibit assignment of
 as interface address.

Denis V. Lunev wrote:
> Daniel Lezcano wrote:
>> Denis V. Lunev wrote:
>>> I could hardly imagine why sombady needs to assign as an
>>> interface
>>> address or interface destination address. The kernel will behave in a
>>> strage
>>> way in several places if this is possible, as ifa_local != 0 is
>>> considered
>>> as initialized/non-initialized state of the ifa.
>> AFAICS, we should be able to set at an interface address to, in
>> order to remove an IP address from an interface and keep this one up.
>> I see two trivial cases:
>>  * remove the ipv4 on an interface but continue to use it through ipv6
>>  * move ipv4 address from the interface to an attached bridge
> For this case there is an IOCTL/netlink "remove IP address".

That's right. But there are people relying on to remove IP 
addresses, especially in the bridge scripts.
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