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-rw-r--r--mcast/mcast.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mcast/mcast.c b/mcast/mcast.c
index 87c0517..01f162f 100644
--- a/mcast/mcast.c
+++ b/mcast/mcast.c
@@ -15,6 +15,7 @@
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
+#include <unistd.h>
#include "mcast_params.h"