- Ensure that inner header checksums are correct on the wire when the outer
header is UDP (MPLSoUDP or VXLAN).

- Outer UDP header source port is now a hash of inner header 5-tuple.

Bug 1338326

Change-Id: I8e1519b562faef30523a297e42c2a4a64759e6f4
Merge "- Ensure that inner header checksums are correct on the wire when the outer header is UDP (MPLSoUDP or VXLAN)."