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-rw-r--r--Documentation/networking/timestamping/txtimestamp.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/networking/timestamping/txtimestamp.c b/Documentation/networking/timestamping/txtimestamp.c
index 8778e684d482..05694febc238 100644
--- a/Documentation/networking/timestamping/txtimestamp.c
+++ b/Documentation/networking/timestamping/txtimestamp.c
@@ -30,6 +30,8 @@
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#define _GNU_SOURCE
+
#include <arpa/inet.h>
#include <asm/types.h>
#include <error.h>