--- relay/relay.c.orig	Mon Jul  7 17:10:02 1997
+++ relay/relay.c	Wed Apr 22 01:16:59 1998
@@ -58,6 +58,12 @@
 #include <sys/socket.h>
 
 #include <net/if.h>
+#ifdef __FreeBSD__
+#include <osreldate.h>
+#if (__FreeBSD_version == 199702) || (__FreeBSD_version >= 300000)
+#include <net/if_var.h>
+#endif
+#endif
 #ifdef sun
 #include <net/nit.h>
 #include <net/nit_if.h>
