fixed build for OpenBSD (no tun device yet)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/udp.h b/src/udp.h
index e7d4875..4873483 100644
--- a/src/udp.h
+++ b/src/udp.h
@@ -35,6 +35,7 @@
 #ifndef _UDP_H_
 #define _UDP_H_
 
+#include <sys/types.h>
 #include <sys/socket.h>
 
 typedef struct sockaddr_storage udp_endpoint_t;