[MACVLAN]: Prevent nesting macvlan devices
authorPatrick McHardy <kaber@trash.net>
Fri, 11 Jan 2008 06:39:28 +0000 (22:39 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 11 Jan 2008 06:39:28 +0000 (22:39 -0800)
Don't allow to nest macvlan devices since it will cause lockdep
warnings and isn't really useful for anything.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

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