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-rw-r--r--docs/examples/externalsocket.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/examples/externalsocket.c b/docs/examples/externalsocket.c
index 5951c078e..c4abafd87 100644
--- a/docs/examples/externalsocket.c
+++ b/docs/examples/externalsocket.c
@@ -36,6 +36,7 @@
#else
#include <sys/types.h> /* socket types */
#include <sys/socket.h> /* socket definitions */
+#include <netinet/in.h>
#include <arpa/inet.h> /* inet (3) funtions */
#include <unistd.h> /* misc. UNIX functions */
#endif