From ef5e889dce3e2ff077b300f183b6d3262aeab9f8 Mon Sep 17 00:00:00 2001
From: Daniel-Constantin Mierla <miconda@gmail.com>
Date: Thu, 2 Nov 2023 13:15:55 +0100
Subject: [PATCH] pdt: return 0 when add_to_tree() detect duplicated prefix
 with pdt mode 1

- GH #3626
---
 src/modules/pdt/pdtree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/pdt/pdtree.c b/src/modules/pdt/pdtree.c
index b211ca6611d..5e60fe216e9 100644
--- a/src/modules/pdt/pdtree.c
+++ b/src/modules/pdt/pdtree.c
@@ -121,7 +121,7 @@ int add_to_tree(pdt_tree_t *pt, str *sp, str *sd)
 		if(_pdt_mode & 1) {
 			LM_DBG("prefix already allocated [%.*s/[%.*s] - ignoring\n",
 					sp->len, sp->s, sd->len, sd->s);
-			return -1;
+			return 0;
 		} else {
 			LM_ERR("prefix already allocated [%.*s/[%.*s]\n", sp->len, sp->s,
 					sd->len, sd->s);