diff --git a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
index bb9e63d1e5..2adf2b870e 100644
--- a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
+++ b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js
@@ -1246,6 +1246,18 @@ return view.extend({
 			if (m) {
 				var devtype = getDevType(section_id);
 
+				/* Treat not explicitly configured, preexisting VLAN interfaces
+				   as simple network devices when adding configuration for them,
+				   since it is more likely that people want to set general device
+				   properties such as MAC address instead of reconfiguring ingress/
+				   egress QoS mapping, which is the only editable property of
+				   preexisting VLAN device config dialogs.
+
+				   Ref: https://github.com/openwrt/luci/issues/5102
+				 */
+				if (devtype == '8021q')
+					devtype = 'ethernet';
+
 				section_id = uci.add('network', 'device');
 
 				uci.set('network', section_id, 'name', m[1]);