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Date:	Tue, 11 Nov 2014 15:12:27 -0800
From:	Cong Wang <cwang@...pensource.com>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Maciej Zenczykowski <maze@...gle.com>,
	Laurent Chavey <chavey@...gle.com>,
	Tim Hockin <thockin@...gle.com>,
	David Miller <davem@...emloft.net>,
	Brandon Philips <brandon.philips@...eos.com>,
	Pavel Emelianov <xemul@...allels.com>
Subject: Re: [PATCH net-next 1/1] ipvlan: Initial check-in of the IPVLAN driver.

On Tue, Nov 11, 2014 at 2:29 PM, Mahesh Bandewar <maheshb@...gle.com> wrote:
> This driver is very similar to the macvlan driver except that it
> uses L3 on the frame to determine the logical interface while
> functioning as packet dispatcher. It inherits L2 of the master
> device hence the packets on wire will have the same L2 for all
> the packets originating from all virtual devices off of the same
> master device.

Why do we need this from the beginning?
IOW, what problem does this solve while macvlan doesn't?


>
> This driver was developed keeping the namespace use-case in
> mind. Hence most of the examples given here take that as the
> base setup where main-device belongs to the default-ns and
> virtual devices are assigned to the additional namespaces.
>

Which virtual device is still not aware of netns now? I'd be surprised.

I _guess_ you mean the if_link of macvlan, that is unfortunately
not just macvlan, but because of netns isolates from L2, it is purely
a display problem, macvlan should work well, just its netlink dump
is confusing.
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