K 10 svn:author V 2 cy K 8 svn:date V 27 2018-08-22T01:23:11.955676Z K 7 svn:log V 303 MFC r338046: Add handy DTrace probes useful in diagnosing NAT issues. DTrace probes are situated next to error counters and/or in one instance prior to the -1 return from various functions. This was useful in diagnosis of PR/208566 and will be handy in the future diagnosing NAT failures. PR: 208566 END