diff --git a/clients/cloud-setup/nmcs-provider-azure.c b/clients/cloud-setup/nmcs-provider-azure.c
index 28019bac42..1674618656 100644
--- a/clients/cloud-setup/nmcs-provider-azure.c
+++ b/clients/cloud-setup/nmcs-provider-azure.c
@@ -395,9 +395,7 @@ _get_config_iface_cb(GObject *source, GAsyncResult *result, gpointer user_data)
             goto out_done;
         }
         iface_data->iface_get_config =
-            nmcs_provider_get_config_iface_data_create(get_config_data->result_dict,
-                                                       FALSE,
-                                                       v_hwaddr);
+            nmcs_provider_get_config_iface_data_create(get_config_data, FALSE, v_hwaddr);
     } else {
         if (iface_data->iface_get_config->iface_idx >= 0) {
             _LOGI("interface[%" G_GSSIZE_FORMAT "]: duplicate MAC address %s returned",
diff --git a/clients/cloud-setup/nmcs-provider-ec2.c b/clients/cloud-setup/nmcs-provider-ec2.c
index ac449271fb..00408ad396 100644
--- a/clients/cloud-setup/nmcs-provider-ec2.c
+++ b/clients/cloud-setup/nmcs-provider-ec2.c
@@ -258,9 +258,7 @@ _get_config_metadata_ready_cb(GObject *source, GAsyncResult *result, gpointer us
                 continue;
             }
             config_iface_data =
-                nmcs_provider_get_config_iface_data_create(get_config_data->result_dict,
-                                                           FALSE,
-                                                           v_hwaddr);
+                nmcs_provider_get_config_iface_data_create(get_config_data, FALSE, v_hwaddr);
         }
 
         nm_assert(config_iface_data->iface_idx == -1);
diff --git a/clients/cloud-setup/nmcs-provider-gcp.c b/clients/cloud-setup/nmcs-provider-gcp.c
index 2389c9ee18..ddbd85281d 100644
--- a/clients/cloud-setup/nmcs-provider-gcp.c
+++ b/clients/cloud-setup/nmcs-provider-gcp.c
@@ -282,9 +282,7 @@ _get_config_iface_cb(GObject *source, GAsyncResult *result, gpointer user_data)
             goto out_done;
         }
         iface_data->iface_get_config =
-            nmcs_provider_get_config_iface_data_create(get_config_data->result_dict,
-                                                       FALSE,
-                                                       v_hwaddr);
+            nmcs_provider_get_config_iface_data_create(get_config_data, FALSE, v_hwaddr);
         is_requested = FALSE;
     } else {
         if (iface_data->iface_get_config->iface_idx >= 0) {
diff --git a/clients/cloud-setup/nmcs-provider.c b/clients/cloud-setup/nmcs-provider.c
index 8dd5cc1997..2c0d938cde 100644
--- a/clients/cloud-setup/nmcs-provider.c
+++ b/clients/cloud-setup/nmcs-provider.c
@@ -174,24 +174,27 @@ nmcs_provider_detect_finish(NMCSProvider *self, GAsyncResult *result, GError **e
 /*****************************************************************************/
 
 NMCSProviderGetConfigIfaceData *
-nmcs_provider_get_config_iface_data_create(GHashTable *iface_datas,
-                                           gboolean    was_requested,
-                                           const char *hwaddr)
+nmcs_provider_get_config_iface_data_create(NMCSProviderGetConfigTaskData *get_config_data,
+                                           gboolean                       was_requested,
+                                           const char                    *hwaddr)
 {
     NMCSProviderGetConfigIfaceData *iface_data;
 
     nm_assert(hwaddr);
+    nm_assert(get_config_data);
+    nm_assert(NMCS_IS_PROVIDER(get_config_data->self));
 
     iface_data  = g_slice_new(NMCSProviderGetConfigIfaceData);
     *iface_data = (NMCSProviderGetConfigIfaceData){
-        .hwaddr        = g_strdup(hwaddr),
-        .iface_idx     = -1,
-        .was_requested = was_requested,
+        .get_config_data = get_config_data,
+        .hwaddr          = g_strdup(hwaddr),
+        .iface_idx       = -1,
+        .was_requested   = was_requested,
     };
 
     /* the has does not own the key (iface_datta->hwaddr), the lifetime of the
      * key is associated with the iface_data instance. */
-    g_hash_table_replace(iface_datas, (char *) iface_data->hwaddr, iface_data);
+    g_hash_table_replace(get_config_data->result_dict, (char *) iface_data->hwaddr, iface_data);
 
     return iface_data;
 }
@@ -280,6 +283,8 @@ nmcs_provider_get_config(NMCSProvider *      self,
 
     get_config_data  = g_slice_new(NMCSProviderGetConfigTaskData);
     *get_config_data = (NMCSProviderGetConfigTaskData){
+        /* "self" is kept alive by "task". */
+        .self = self,
         .task = nm_g_task_new(self, cancellable, nmcs_provider_get_config, callback, user_data),
         .any  = any,
         .result_dict = g_hash_table_new_full(nm_str_hash, g_str_equal, NULL, _iface_data_free),
@@ -288,7 +293,7 @@ nmcs_provider_get_config(NMCSProvider *      self,
     nmcs_wait_for_objects_register(get_config_data->task);
 
     for (; hwaddrs && hwaddrs[0]; hwaddrs++)
-        nmcs_provider_get_config_iface_data_create(get_config_data->result_dict, TRUE, hwaddrs[0]);
+        nmcs_provider_get_config_iface_data_create(get_config_data, TRUE, hwaddrs[0]);
 
     if (cancellable) {
         gulong cancelled_id;
diff --git a/clients/cloud-setup/nmcs-provider.h b/clients/cloud-setup/nmcs-provider.h
index 3663205964..a5c04c0405 100644
--- a/clients/cloud-setup/nmcs-provider.h
+++ b/clients/cloud-setup/nmcs-provider.h
@@ -9,11 +9,16 @@
 
 /*****************************************************************************/
 
+struct _NMCSProvider;
+struct _NMCSProviderGetConfigTaskData;
+
 typedef struct {
     /* And it's exactly the same pointer that is also the key for the iface_datas
      * dictionary. */
     const char *hwaddr;
 
+    struct _NMCSProviderGetConfigTaskData *get_config_data;
+
     in_addr_t *ipv4s_arr;
     gsize      ipv4s_len;
 
@@ -45,10 +50,6 @@ nmcs_provider_get_config_iface_data_is_valid(const NMCSProviderGetConfigIfaceDat
            && ((config_data->has_ipv4s && config_data->has_cidr) || config_data->iproutes_len);
 }
 
-NMCSProviderGetConfigIfaceData *nmcs_provider_get_config_iface_data_create(GHashTable *iface_datas,
-                                                                           gboolean was_requested,
-                                                                           const char *hwaddr);
-
 /*****************************************************************************/
 
 typedef struct {
@@ -83,9 +84,11 @@ NM_AUTO_DEFINE_FCN0(NMCSProviderGetConfigResult *,
 
 /*****************************************************************************/
 
-typedef struct {
+typedef struct _NMCSProviderGetConfigTaskData {
     GTask *task;
 
+    struct _NMCSProvider *self;
+
     GHashTable *result_dict;
 
     /* this cancellable should be used for the provider implementation
@@ -105,6 +108,15 @@ typedef struct {
     bool any : 1;
 } NMCSProviderGetConfigTaskData;
 
+/*****************************************************************************/
+
+NMCSProviderGetConfigIfaceData *
+nmcs_provider_get_config_iface_data_create(NMCSProviderGetConfigTaskData *get_config_data,
+                                           gboolean                       was_requested,
+                                           const char                    *hwaddr);
+
+/*****************************************************************************/
+
 #define NMCS_TYPE_PROVIDER (nmcs_provider_get_type())
 #define NMCS_PROVIDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), NMCS_TYPE_PROVIDER, NMCSProvider))
 #define NMCS_PROVIDER_CLASS(klass) \
@@ -118,7 +130,7 @@ typedef struct {
 
 struct _NMCSProviderPrivate;
 
-typedef struct {
+typedef struct _NMCSProvider {
     GObject                      parent;
     struct _NMCSProviderPrivate *_priv;
 } NMCSProvider;