Index: vendor/tcpdump/FreeBSD-upgrade
===================================================================
--- vendor/tcpdump/FreeBSD-upgrade	(nonexistent)
+++ vendor/tcpdump/FreeBSD-upgrade	(revision 313053)
@@ -0,0 +1,40 @@
+The last import of tcpdump 4.9.0 documentation.
+
+In vendor/tcpdump checkout:
+
+# tar xzvf tcpdump-4.9.0.tar.gz
+# mv tcpdump-4.9.0 4.9.0
+# svn add 4.9.0/
+# svn propdel -R svn:keywords 4.9.0
+# svn commit 4.9.0
+# cd 4.9.0
+# rsync --archive --delete . ../dist/
+# cd ../dist/
+# svn rm $(svn stat | awk '$1 == "!" { print $2 }')
+# svn add $(svn stat | awk '$1 == "?" { print $2 }')
+# svn propdel -R svn:keywords .
+# svn commit
+
+Get revision from the last command.
+
+In head checkout:
+# cd contrib/tcpdump
+# svn merge -c ${rev} svn+ssh://repo.freebsd.org/base/vendor/tcpdump/dist
+
+Resolve conflicts.
+
+Our exclusion list is:
+
+aclocal.m4
+Readme.Win32
+tests
+win32
+
+In head checkout:
+
+# cd usr.sbin/tcpdump
+
+Update Makefile if needed, and config.h. Compare to config.h generated by
+configure.
+
+Run 'make worlds' to test that everything is compilable. Commit.