diff --git a/daemon/main.c b/daemon/main.c
index fe475ed21..7c7ffbdfe 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -613,8 +613,9 @@ void fill_initial_rtpe_cfg(struct rtpengine_config* ini_rtpe_cfg) {
 	struct intf_config* gptr_data;
 
 	for(l = rtpe_config.interfaces.head; l ; l=l->next) {
-		gptr_data = (struct intf_config*)malloc(sizeof(struct intf_config));
-		memcpy(gptr_data, (struct intf_config*)(l->data), sizeof(struct intf_config));
+		gptr_data = g_slice_alloc0(sizeof(*gptr_data));
+		memcpy(gptr_data, (struct intf_config*)(l->data), sizeof(*gptr_data));
+		str_init_dup(&gptr_data->name, ((struct intf_config*)(l->data))->name.s);
 
 		g_queue_push_tail(&ini_rtpe_cfg->interfaces, gptr_data);
 	}
@@ -680,7 +681,20 @@ void fill_initial_rtpe_cfg(struct rtpengine_config* ini_rtpe_cfg) {
 	ini_rtpe_cfg->jb_clock_drift = rtpe_config.jb_clock_drift;
 }
 
+static void
+free_config_interfaces (gpointer data)
+{
+	struct intf_config* gptr_data = data;
+
+	str_free_dup(&gptr_data->name);
+	g_slice_free1(sizeof(*gptr_data), gptr_data);
+}
+
 static void unfill_initial_rtpe_cfg(struct rtpengine_config* ini_rtpe_cfg) {
+	// clear queues
+	g_queue_clear_full(&ini_rtpe_cfg->interfaces, (GDestroyNotify)free_config_interfaces);
+	g_queue_clear(&ini_rtpe_cfg->redis_subscribed_keyspaces);
+
 	// free g_strdup
 	g_free(ini_rtpe_cfg->b2b_url);
 	g_free(ini_rtpe_cfg->redis_auth);
@@ -692,6 +706,10 @@ static void unfill_initial_rtpe_cfg(struct rtpengine_config* ini_rtpe_cfg) {
 }
 
 static void options_free(void) {
+	// clear queues
+	g_queue_clear_full(&rtpe_config.interfaces, (GDestroyNotify)free_config_interfaces);
+	g_queue_clear(&rtpe_config.redis_subscribed_keyspaces);
+
 	// free config options
 	g_free(rtpe_config.b2b_url);
 	g_free(rtpe_config.spooldir);
diff --git a/lib/str.h b/lib/str.h
index 9ebc36ddc..7b1e263cf 100644
--- a/lib/str.h
+++ b/lib/str.h
@@ -62,6 +62,7 @@ INLINE str *str_init_len_assert_len(str *out, char *s, int buflen, int len);
 #define str_init_len_assert(out, s, len) str_init_len_assert_len(out, s, sizeof(s), len)
 /* inits a str object from a regular string and duplicates the contents. returns out */
 INLINE str *str_init_dup(str *out, char *s);
+INLINE void str_free_dup(str *out);
 /* returns new str object with uninitialized buffer large enough to hold `len` characters (+1 for null byte) */
 INLINE str *str_alloc(int len);
 /* returns new str object allocated with malloc, including buffer */
@@ -235,6 +236,16 @@ INLINE str *str_init_dup(str *out, char *s) {
 	out->len = s ? strlen(s) : 0;
 	return out;
 }
+INLINE void str_free_dup(str *out) {
+	if (!out)
+		return ;
+
+	if (out->s)
+		free(out->s);
+
+	out->s = NULL;
+	out->len = 0;
+}
 INLINE str *str_alloc(int len) {
 	str *r;
 	r = malloc(sizeof(*r) + len + 1);