Avoid double-free when prepending Non-ESP marker.

diff --git a/src/libcharon/network/sender.c b/src/libcharon/network/sender.c
index c12941e..b3e8d29 100644 (file)
--- a/src/libcharon/network/sender.c
+++ b/src/libcharon/network/sender.c
@@ -133,7 +133,7 @@ METHOD(sender_t, send_, void,
                /* NAT keepalives have no marker prepended */
                if (data.len != 1 || data.ptr[0] != 0xFF)
                {
-                       data = chunk_cat("cm", marker, data);
+                       data = chunk_cat("cc", marker, data);
                        packet->set_data(packet, data);
                }
        }