1 files changed, 10 insertions, 0 deletions
diff --git a/ffd/util.h b/ffd/util.h
index 8020381..9fd6d66 100644
--- a/ffd/util.h
+++ b/ffd/util.h
@@ -30,11 +30,21 @@
 #include "types.h"
 
 #include <stdarg.h>
+#include <stdlib.h>
 #include <time.h>
 
 
 bool file_readv(const char *file, const char *format, va_list ap);
+void random_bytes(void *buffer, size_t len);
 
+static inline bool is_eth_addr_unspec(const eth_addr_t *address) {
+	const uint8_t *a = address->d;
+
+	if (a[0]||a[1]||a[2]||a[3]||a[4]||a[5])
+		return false;
+	else
+		return true;
+}
 
 static inline bool are_eth_addrs_equal(const eth_addr_t *address1, const eth_addr_t *address2) {
 	const uint8_t *a = address1->d;