am 0b55c77e: (-s ours) am 892f3161: am 57bcefd5: DO NOT MERGE: Add generic IP packet code and use it for GRE.

* commit '0b55c77e96ec1804f5b4eb0fde4bb22d79a55cad':
  DO NOT MERGE: Add generic IP packet code and use it for GRE.