From: Nicolas Dichtel <redacted>
Date: Tue, 25 Aug 2015 16:20:34 +0200
From: huaibin Wang <redacted>
When a tunnel is deleted, the cached dst entry should be released.
This problem may prevent the removal of a netns (seen with a x-netns IPv6
gre tunnel):
unregister_netdevice: waiting for lo to become free. Usage count = 3
CC: Dmitry Kozlov <redacted>
Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: huaibin Wang <redacted>
Signed-off-by: Nicolas Dichtel <redacted>
Applied and queued up for -stable, thanks.