From 9e8bbd4265271612732c0804065ce8bf4939e8c0 Mon Sep 17 00:00:00 2001
From: "Leon M. Busch-George" <leon@georgemail.eu>
Date: Fri, 16 Jun 2023 14:53:09 +0200
Subject: [PATCH] base-files: ipcalc.sh: correctly interpret num parameter

The start and end addresses are inclusive.
Thus, adding num without substracting one results in num + 1 addresses.
Add the substraction and to implement the documented behaviour.

Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
---
 package/base-files/files/bin/ipcalc.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh
index 56854b410410..21f84bcaf2e0 100755
--- a/package/base-files/files/bin/ipcalc.sh
+++ b/package/base-files/files/bin/ipcalc.sh
@@ -69,7 +69,7 @@ BEGIN {
 	if (start<limit) start=limit
 	if (start==ipaddr) start=ipaddr+1
 
-	end=start+ARGV[4]
+	end=start+ARGV[4]-1
 	limit=or(network,compl32(netmask))-1
 	if (end>limit) end=limit
 	if (end==ipaddr) end=ipaddr-1
-- 
2.30.2