From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: Bisect'ed BUG in VLAN promisc mode (6c78dcbd47)
Date: Fri, 26 Sep 2008 18:14:07 +0200
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Jesper Dangaard Brouer wrote:
> Hi Patrick,
> 
> Bisected me down to one of you changes
>  commit 6c78dcbd47a68a
>  [VLAN]: Fix promiscous/allmulti synchronization races
> 
> Description:
> ------------
>  All other VLAN interfaces stop working, if a vlan is taken down
>  (ifconfig eth1.1025 down) _while_ there is a tcpdump running on that
>  interface.
> 
>  The problem is a result of promisc mode being removed on the
>  real-device (eth1), when the vlan interface is taken down.  This
>  should not happen as other vlan devices exists that still need
>  promisc mode on the real-device (eth1).

I'm pretty sure we fixed this already in commit 0ed21b32.