diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 9d5f6ae954..8b7973890e 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -3227,12 +3227,14 @@ ip4_config_merge_and_apply (NMDevice *self,
 	if (connection) {
 		NMSettingIPConfig *s_ip4 = nm_connection_get_setting_ip4_config (connection);
 
-		if (nm_setting_ip_config_get_ignore_auto_routes (s_ip4))
-			nm_ip4_config_reset_routes (composite);
-		if (nm_setting_ip_config_get_ignore_auto_dns (s_ip4))
-			nm_ip4_config_reset_nameservers (composite);
-			nm_ip4_config_reset_domains (composite);
-			nm_ip4_config_reset_searches (composite);
+		if (s_ip4) {
+			if (nm_setting_ip_config_get_ignore_auto_routes (s_ip4))
+				nm_ip4_config_reset_routes (composite);
+			if (nm_setting_ip_config_get_ignore_auto_dns (s_ip4))
+				nm_ip4_config_reset_nameservers (composite);
+				nm_ip4_config_reset_domains (composite);
+				nm_ip4_config_reset_searches (composite);
+		}
 	}
 
 	/* Merge user overrides into the composite config. For assumed connections,
@@ -3835,12 +3837,14 @@ ip6_config_merge_and_apply (NMDevice *self,
 	if (connection) {
 		NMSettingIPConfig *s_ip6 = nm_connection_get_setting_ip6_config (connection);
 
-		if (nm_setting_ip_config_get_ignore_auto_routes (s_ip6))
-			nm_ip6_config_reset_routes (composite);
-		if (nm_setting_ip_config_get_ignore_auto_dns (s_ip6))
-			nm_ip6_config_reset_nameservers (composite);
-			nm_ip6_config_reset_domains (composite);
-			nm_ip6_config_reset_searches (composite);
+		if (s_ip6) {
+			if (nm_setting_ip_config_get_ignore_auto_routes (s_ip6))
+				nm_ip6_config_reset_routes (composite);
+			if (nm_setting_ip_config_get_ignore_auto_dns (s_ip6))
+				nm_ip6_config_reset_nameservers (composite);
+				nm_ip6_config_reset_domains (composite);
+				nm_ip6_config_reset_searches (composite);
+		}
 	}
 
 	/* Merge user overrides into the composite config. For assumed connections,