Merge r309649, r313048, r313083, r313104: tcpdump 4.9.0
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.Prune svn:mergeinfo from the new branch, as nothing has been mergedhere.Additional commits post-branch will follow.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
MFV r276761: tcpdump 4.6.2.MFC after: 1 month
MFV: tcpdump 4.4.0.MFC after: 4 weeks
Vendor import of tcpdump 4.4.0.