Merge pull request #109 from particle-iot/minor/assignment-to-const-var

use let instead of const

src/network-device.js

@@ -215,7 +215,8 @@ const NetworkDevice = base => class extends base {
 		} = reply.interface;
 
 		const activeFlags = this._getActiveFlags(flags, proto.InterfaceFlag);
-		const flagsStrings = activeFlags.map(flag => InterfaceFlag.fromProtobuf(flag));
+		let flagsStrings = activeFlags.map(flag => InterfaceFlag.fromProtobuf(flag));
+		flagsStrings = [...new Set(flagsStrings)];
 
 		const result = {
 			index: ifaceIndex,