From f9ad139c08000b9c7ae67a9592b5e9cb505f1fab Mon Sep 17 00:00:00 2001
From: George Thessalonikefs <george@nlnetlabs.nl>
Date: Fri, 23 Jul 2021 17:51:42 +0200
Subject: [PATCH] - Fix for #411, #439, #469: stream reuse, fix linking when
 touching the   tcp_reuse LRU list.

---
 services/outside_network.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/outside_network.c b/services/outside_network.c
index b40c3076e..8b8deea91 100644
--- a/services/outside_network.c
+++ b/services/outside_network.c
@@ -753,6 +753,9 @@ reuse_tcp_lru_touch(struct outside_network* outnet, struct reuse_tcp* reuse)
 	/* insert at the front */
 	reuse->lru_prev = NULL;
 	reuse->lru_next = outnet->tcp_reuse_first;
+	if(outnet->tcp_reuse_first) {
+		outnet->tcp_reuse_first->lru_prev = reuse;
+	}
 	log_assert(reuse->lru_next != reuse);
 	/* since it is not first, it is not the only element and
 	 * lru_next is thus not NULL and thus reuse is now not the last in