From: "Christopher Friesen" <cfriesen@nortelnetworks.com>
To: Matthias Andree <matthias.andree@stud.uni-dortmund.de>
Cc: Wietse Venema <wietse@porcupine.org>,
Linux-Kernel mailing list <linux-kernel@vger.kernel.org>,
linux-net@vger.kernel.org
Subject: Re: ioctl SIOCGIFNETMASK: ip alias bug 2.4.9 and 2.2.19
Date: Wed, 05 Sep 2001 14:25:29 -0400 [thread overview]
Message-ID: <3B966E19.3B9B10B4@nortelnetworks.com> (raw)
In-Reply-To: <20010905170037.A6473@emma1.emma.line.org> <20010905152738.C5912BC06D@spike.porcupine.org> <20010905182033.D3926@emma1.emma.line.org>
Matthias Andree wrote:
> Wietse Venema and I are wondering about different Linux 2.2/2.4 and
> FreeBSD 4.4-RC behaviour when using ioctls to figure interface netmasks,
> FreeBSD gets it right, Linux 2.4.9 and 2.4.9-ac7 get it wrong, and from
> looking at the source, I think, Linux 2.2.19 gets it wrong as well.
> Looking at Linux' Kernel source, Linux 2.4.9 compares just the ifr_name,
> /usr/src/linux/net/ipv4/devinet.c, function devinet_ioctl, ll. 463 ff.
> in 2.4.9, so Linux always returns the mask for the first address, not
> the mask for the requested address. This doesn't matter as long as
> eth0:0-style aliases are configured with ifconfig, but it does matter as
> soon as ip comes into play and both addresses are assigned to eth0
> rather than eth0 and eth0:0.
I think the silence you are hearing from the lkml is a bunch of people thinking
"Oh, crap!".
Chris
--
Chris Friesen | MailStop: 043/33/F10
Nortel Networks | work: (613) 765-0557
3500 Carling Avenue | fax: (613) 765-2986
Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com
next prev parent reply other threads:[~2001-09-05 18:25 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20010905170037.A6473@emma1.emma.line.org>
[not found] ` <20010905152738.C5912BC06D@spike.porcupine.org>
2001-09-05 16:20 ` ioctl SIOCGIFNETMASK: ip alias bug 2.4.9 and 2.2.19 Matthias Andree
2001-09-05 18:25 ` Christopher Friesen [this message]
2001-09-05 18:34 ` Alan Cox
2001-09-05 21:23 ` Wietse Venema
2001-09-06 18:36 ` Andi Kleen
2001-09-06 18:51 ` Wietse Venema
2001-09-06 19:05 ` Andi Kleen
2001-09-07 9:30 ` Henning P. Schmiedehausen
2001-09-07 11:15 ` Matthias Andree
[not found] <20010905170037.A6473@emma1.emma.line.org.suse.lists.linux.kernel>
[not found] ` <20010905152738.C5912BC06D@spike.porcupine.org.suse.lists.linux.kernel>
[not found] ` <20010905182033.D3926@emma1.emma.line.org.suse.lists.linux.kernel>
2001-09-05 19:26 ` Andi Kleen
2001-09-06 13:11 ` Matthias Andree
2001-09-06 13:35 ` Andrey Savochkin
2001-09-06 14:04 ` Wietse Venema
2001-09-06 14:21 ` Matthias Andree
2001-09-06 14:51 ` Alan Cox
2001-09-06 14:17 ` Matthias Andree
2001-09-08 12:42 ` Kai Henningsen
2001-09-09 0:37 ` Matthias Andree
2001-09-05 22:08 jamal
2001-09-06 15:11 ` kuznet
2001-09-06 20:22 ` Matthias Andree
[not found] <fa.k8o5i6v.4i8gis@ifi.uio.no>
[not found] ` <fa.fuk70gv.mk6m09@ifi.uio.no>
2001-09-06 21:19 ` Sam Varshavchik
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