ofp_vxlan.c added.
ofp_vxlan.c added.

Signed-off-by: Hannu Jokinen <cb7811d6e4f31e21756019d681ad07ec7833e91d@nokia.com>

OpenFastPath/ofp,TolikH/ofp,TolikH/ofp,OpenFastPath/ofp,OpenFastPath/ofp,OpenFastPath/ofp,TolikH/ofp