From: "Denis V. Lunev" <den@sw.ru>
To: Daniel Lezcano <dlezcano@fr.ibm.com>
Cc: "Denis V. Lunev" <den@openvz.org>,
davem@davemloft.net, netdev@vger.kernel.org, devel@openvz.org,
containers@lists.osdl.org
Subject: Re: [PATCH 3/7 net-2.6.25] [IPV4]: Prohibit assignment of 0.0.0.0 as interface address.
Date: Fri, 25 Jan 2008 17:13:32 +0300 [thread overview]
Message-ID: <4799EE8C.60407@sw.ru> (raw)
In-Reply-To: <4799EBBE.6080706@fr.ibm.com>
Daniel Lezcano wrote:
> Denis V. Lunev wrote:
>> I could hardly imagine why sombady needs to assign 0.0.0.0 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 0.0.0.0, 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".
next prev parent reply other threads:[~2008-01-25 14:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 13:51 [PATCH 1/7 net-2.6.25] [IPV4]: Fix memory leak on error path during FIB initialization Denis V. Lunev
2008-01-25 13:51 ` [PATCH 2/7 net-2.6.25] [IPV4]: Small style cleanup of the error path in rtm_to_ifaddr Denis V. Lunev
2008-01-25 13:51 ` [PATCH 3/7 net-2.6.25] [IPV4]: Prohibit assignment of 0.0.0.0 as interface address Denis V. Lunev
2008-01-25 14:01 ` Daniel Lezcano
2008-01-25 14:13 ` Denis V. Lunev [this message]
2008-01-25 14:37 ` Daniel Lezcano
2008-01-25 14:48 ` Daniel Lezcano
2008-01-25 15:12 ` Denis V. Lunev
2008-01-25 15:12 ` Daniel Lezcano
2008-01-25 16:34 ` Stephen Hemminger
2008-01-25 13:52 ` [PATCH 4/7 net-2.6.25] [NETNS]: Process interface address manipulation routines in the namespace Denis V. Lunev
2008-01-25 13:52 ` [PATCH 5/7 net-2.6.25] [IPV4]: fib_sync_down rework Denis V. Lunev
2008-01-25 13:52 ` [PATCH 6/7 net-2.6.25] [NETNS]: Add a namespace mark to fib_info Denis V. Lunev
2008-01-25 13:52 ` [PATCH 7/7 net-2.6.25] [NETNS]: Lookup in FIB semantic hashes taking into account the namespace Denis V. Lunev
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