Fix compile on NetBSD-6

diff --git a/arp.c b/arp.c
index 5c8c32e15bab535f2a554d33c354cbee256d5877..9dc86b60c86bcc4338bd89e528b73272bef61ed6 100644 (file)
--- a/arp.c
+++ b/arp.c
@@ -26,6 +26,7 @@
  */
 
 #include <sys/socket.h>
+#include <sys/types.h>
 
 #include <net/if.h>
 #include <netinet/in.h>