From: Roopa Prabhu <ro...@cumulusnetworks.com>
Date: Mon, 25 Jun 2018 20:32:53 -0700

> From: Roopa Prabhu <ro...@cumulusnetworks.com>
> 
> In systems where neigh gc thresh holds are set to high values,
> admin deleted neigh entries (eg ip neigh flush or ip neigh del) can
> linger around in NUD_FAILED state for a long time until periodic gc kicks
> in. This patch forces neigh_invalidate when NUD_FAILED neigh_update is
> from an admin.
> 
> Signed-off-by: Roopa Prabhu <ro...@cumulusnetworks.com>

Applied.

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