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authorstephen hemminger <shemminger@vyatta.com>2012-09-24 18:12:23 +0000
committerDavid S. Miller <davem@davemloft.net>2012-09-27 18:12:37 -0400
commitd208328765a0ab425e36b5b828285f3337a85451 (patch)
tree80897cfb2f5537bdfbda57a736a91a04c85a1ceb /tools/firewire
parentaa99521eed6b77628f6f54ff6b2903f4130c0808 (diff)
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gre: fix handling of key 0
GRE driver incorrectly uses zero as a flag value. Zero is a perfectly valid value for key, and the tunnel should match packets with no key only with tunnels created without key, and vice versa. This is a slightly visible change since previously it might be possible to construct a working tunnel that sent key 0 and received only because of the key wildcard of zero. I.e the sender sent key of zero, but tunnel was defined without key. Note: using gre key 0 requires iproute2 utilities v3.2 or later. The original utility code was broken as well. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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