From a8ccdb73a61d0b64fb3f715985d4932f68754ad2 Mon Sep 17 00:00:00 2001
From: Alexandre Pion <pion@afnic.fr>
Date: Tue, 4 Oct 2022 19:36:39 +0200
Subject: [PATCH] Don't overwrite already defined EDNS options

---
 src/LDNS.xs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/LDNS.xs b/src/LDNS.xs
index 0a05899..41606b0 100644
--- a/src/LDNS.xs
+++ b/src/LDNS.xs
@@ -1421,7 +1421,11 @@ packet_nsid(obj)
         ldns_edns_option_list* edns_list;
         ldns_edns_option*      edns_opt;
 
-        edns_list = ldns_edns_option_list_new();
+        edns_list = ldns_pkt_edns_get_option_list(obj);
+
+        if ( !edns_list )
+            edns_list = ldns_edns_option_list_new();
+
         edns_opt  = ldns_edns_new_from_data(LDNS_EDNS_NSID, 0, NULL);
         if ( edns_list == NULL || edns_opt == NULL )
             croak("Could not allocate EDNS option");