vxlan: allow multiple VXLANs with same VNI for IPv6 link-local addresses

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As link-local addresses are only valid for a single interface, we can allow
to use the same VNI for multiple independent VXLANs, as long as the used
interfaces are distinct. This way, VXLANs can always be used as a drop-in
replacement for VLANs with greater ID space.

This also extends VNI lookup to respect the ifindex when link-local IPv6
addresses are used, so using the same VNI on multiple interfaces can
actually work.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Matthias Schiffer 2017-06-19 10:04:00 +02:00 • committed by David S. Miller

parent 87613de950

commit 49f810f00f

1 changed files with 45 additions and 23 deletions

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68

drivers/net/vxlan.c

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