From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH / RFC] kni: Add set_rx_mode callback to
 handle multicast groups
Date: Thu, 28 May 2015 07:56:26 -0700
Message-ID: <20150528075626.4aae8334@urahara>
References: <20150507151754.1620c4cb@miho>
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To: Simon Kagstrom <simon.kagstrom@netinsight.net>
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On Thu, 7 May 2015 15:17:54 +0200
Simon Kagstrom <simon.kagstrom@netinsight.net> wrote:

> This is needed to add / remove interfaces in multicast groups via the
> ip tool.
> 
> The callback does nothing - the same as the kernel tun.c.
> 
> Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>

Yes, the dummy callback is needed, otherwise SIOCADDMULTI ioctl will
fail.