From 4c5790de28b074376c628fd0acc70fd6bb38efe7 Mon Sep 17 00:00:00 2001
From: Mike Brady <mikebrady@eircom.net>
Date: Fri, 23 Nov 2018 13:39:23 +0000
Subject: [PATCH] Fix off-by-one error in UDP range counting

---
 common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common.c b/common.c
index f735dba4..9b1a5538 100644
--- a/common.c
+++ b/common.c
@@ -104,7 +104,7 @@ uint16_t nextFreeUDPPort() {
 	
 	if (UDPPortIndex == 0)
 		UDPPortIndex = config.udp_port_base;
-	else if (UDPPortIndex == (config.udp_port_base + config.udp_port_range))
+	else if (UDPPortIndex == (config.udp_port_base + config.udp_port_range - 1))
 		UDPPortIndex = config.udp_port_base;
 	else
 		UDPPortIndex++;