--- include/libnet.h.in.orig	2019-10-06 06:18:52 UTC
+++ include/libnet.h.in
@@ -75,6 +75,9 @@ extern "C" {
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <net/if.h>
+#if defined (__FreeBSD__) || defined (__DragonFly__)
+#include <netinet/in.h>
+#endif
 #include <arpa/inet.h>
 #include <sys/time.h>
 #include <netdb.h>