From e3b98d5bbf6f8677c0adf345cfe063c7f5ea6c98 Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Thu, 25 Aug 2016 15:13:25 +0200
Subject: [PATCH] detect-ack: extra match support

---
 src/detect-ack.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/detect-ack.c b/src/detect-ack.c
index 75d3427eea..0ea0dc285a 100644
--- a/src/detect-ack.c
+++ b/src/detect-ack.c
@@ -156,6 +156,9 @@ PrefilterPacketAckMatch(DetectEngineThreadCtx *det_ctx, Packet *p, const void *p
 {
     const PrefilterPacketHeaderCtx *ctx = pectx;
 
+    if (PrefilterPacketHeaderExtraMatch(ctx, p) == FALSE)
+        return;
+
     if ((p->proto) == IPPROTO_TCP && !(PKT_IS_PSEUDOPKT(p)) &&
         (p->tcph != NULL) && (TCP_GET_ACK(p) == ctx->v1.u32[0]))
     {