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b666962be3
Several encapsulation formats have the concept of an 'OAM' bit which typically is used with networking tracing tools to distinguish test packets from real traffic. OVS already internally has support for this, however, it doesn't do anything with it and it also isn't exposed for controllers to use. This enables support through OpenFlow. There are several other tunnel flags which are consumed internally by OVS. It's not clear that it makes sense to use them externally so this does not expose those flags - although it should be easy to do so if necessary in the future. Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Ben Pfaff <blp@nicira.com>