1 files changed, 7 insertions, 0 deletions
diff --git a/protocol.h b/protocol.h
index a450b2b..11c9aca 100644
--- a/protocol.h
+++ b/protocol.h
@@ -33,6 +33,13 @@
 #define MT_MNDP_TIMEOUT 5
 #define MT_MNDP_LONGTIMEOUT 120
 
+#ifndef ETH_ALEN
+#define ETH_ALEN 6
+#endif
+#ifndef IPV4_ALEN
+#define IPV4_ALEN 4
+#endif
+
 /* Packet type */
 enum mt_ptype {
 	MT_PTYPE_SESSIONSTART,