diff --git a/src/core/dns/nm-dns-manager.c b/src/core/dns/nm-dns-manager.c
index f8d82ce4b1..fb38a44d9c 100644
--- a/src/core/dns/nm-dns-manager.c
+++ b/src/core/dns/nm-dns-manager.c
@@ -1966,6 +1966,7 @@ nm_dns_manager_set_ip_config(NMDnsManager         *self,
 
     if (!ip_data) {
         ip_data = _dns_config_ip_data_new(data, addr_family, source_tag, l3cd, ip_config_type);
+        priv->ip_data_lst_need_sort = TRUE;
         if (!any_removed) {
             /* `any_removed` tracks whether we deleted any ip_data. If that happened,
              * we already compared the old and new l3cds and set `changed` accordingly.