Fix compile on NetBSD-6

diff --git a/duid.c b/duid.c
index 4f39512b04e73ab0c30fdc18b9e74d09e7c75fb0..4a77f76f6ae2a17070504ddf08c0a8236b0c7180 100644 (file)
--- a/duid.c
+++ b/duid.c
@@ -30,6 +30,7 @@
 #define DUID_LL                3
 
 #include <sys/socket.h>
+#include <sys/types.h>
 
 #include <net/if.h>
 #include <net/if_arp.h>