1 files changed, 8 insertions, 0 deletions
diff --git a/main.c b/main.c
index 31ad820..e217b49 100644
--- a/main.c
+++ b/main.c
@@ -40,6 +40,7 @@
 int sockfd;
 int deviceIndex;
 int outcounter=0;
+int incounter=0;
 int sessionkey=0;
 int running = 1;
 
@@ -129,6 +130,13 @@ void handlePacket(unsigned char *data, int data_len) {
 		if (DEBUG)
 			printf("ACK: Plen = %d, Send result: %d\n", plen, result);
 
+		if (incounter == 0 || pkthdr.counter > incounter)
+			incounter = pkthdr.counter;
+		else {
+			/* Ignore double or old packets */
+			return;
+		}
+
 		rest = data_len - 22;
 		p += 22;
 		while (rest > 0) {