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-rw-r--r--vnet/vnet/ipsec/ikev2_payload.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/vnet/vnet/ipsec/ikev2_payload.c b/vnet/vnet/ipsec/ikev2_payload.c
index f523fa81cba..a1ee51929e5 100644
--- a/vnet/vnet/ipsec/ikev2_payload.c
+++ b/vnet/vnet/ipsec/ikev2_payload.c
@@ -13,6 +13,8 @@
* limitations under the License.
*/
+#include <ctype.h>
+
#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>