Went to build the example in man 4 pf and believe it needs a diff
Index: pf.4 =================================================================== RCS file: /cvs/src/share/man/man4/pf.4,v retrieving revision 1.85 diff -u -p -r1.85 pf.4 --- pf.4 18 Apr 2014 21:42:04 -0000 1.85 +++ pf.4 12 Oct 2015 17:09:46 -0000 @@ -1005,10 +1005,12 @@ The following example demonstrates how t .Dv DIOCGETLIMIT command to show the hard limit of a memory pool used by the packet filter: .Bd -literal +#include <netinet/in.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <sys/fcntl.h> +#include <sys/limits.h> #include <net/if.h> #include <net/pfvar.h> #include <stdio.h> -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan
