netdev - Fw: [Bug 88871] New: SO_BINDTODEVICE set sock's sk_bound_dev_if ,but interface's index can chang where interface down and up

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Date:	Tue, 25 Nov 2014 07:43:38 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	netdev@...r.kernel.org
Subject: Fw: [Bug 88871] New: SO_BINDTODEVICE set sock's sk_bound_dev_if
 ,but interface's index can chang where interface down and up

This is not really a bug.

Begin forwarded message:

Date: Mon, 24 Nov 2014 22:50:49 -0800
From: "bugzilla-daemon@...zilla.kernel.org" <bugzilla-daemon@...zilla.kernel.org>
To: "stephen@...workplumber.org" <stephen@...workplumber.org>
Subject: [Bug 88871] New: SO_BINDTODEVICE set sock's sk_bound_dev_if ,but interface's index can chang where interface down and up


https://bugzilla.kernel.org/show_bug.cgi?id=88871

            Bug ID: 88871
           Summary: SO_BINDTODEVICE set sock's sk_bound_dev_if ,but
                    interface's index can chang where interface down and
                    up
           Product: Networking
           Version: 2.5
    Kernel Version: 3.4
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
          Assignee: shemminger@...ux-foundation.org
          Reporter: 10142904@...com
        Regression: No

call setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, iface_brlan, iface_len + 1),
the sock's sk_bound_dev_if be set to iface_brlan's index, when i pull out other
cab and plug in，  the br-lan's index can changed, the tcp packet to the socket
be rest, because the orignal sk_bound_dev_if not match current br-lan's index

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