diff -ruN udpxy-1.0.23-9.orig/ifaddr.c udpxy-1.0.23-9/ifaddr.c
--- udpxy-1.0.23-9.orig/ifaddr.c	2013-05-18 09:02:55.000000000 -0700
+++ udpxy-1.0.23-9/ifaddr.c	2016-11-06 08:03:59.029130434 -0800
@@ -20,6 +20,7 @@
 
 
 #include <sys/socket.h>
+#include <sys/sockio.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <string.h>