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packets coming out of a GIF tunnel are re-processed by ipfw, et. al. By default they are not reprocessed. With the option they are. This reverts 1.214. Prior to that change packets were not re-processed. After they were which caused problems because packets do not have distinguishing characteristics (like a special network if) that allows them to be filtered specially. This is really a stopgap measure designed for immediate MFC so that 4.8 has consistent handling to what was in 4.7. PR: 48159 Reviewed by: Guido van Rooij <guido@gvr.org> MFC after: 1 day