$NetBSD$
--- doarp.c.orig	2009-07-15 19:54:28.000000000 -0500
+++ doarp.c	2009-07-15 19:55:14.000000000 -0500
@@ -8,14 +8,17 @@
 #include <sys/time.h>
 
 #include <net/bpf.h>
-#include <net/ethernet.h>
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/if_types.h>
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
 #include <arpa/inet.h>
-
+#if defined(__NetBSD__)
+#include <net/if_ether.h>
+#else
+#include <net/ethernet.h>
+#endif
 #include <err.h>
 #include <errno.h>
 #include <fcntl.h>
