Interface enumeration fails on ATV 4 gen

[Dunno Much]

file: GCDAsyncUDpSocket
line 1446

The matching of the currently in use network adapter fails the condition resulting in not making the binding possible when the code exist the call back.

It runs fine in the simulator as it leverages OSX network stack which seems to be compatible with that code.

The issue seems to have the root cause on this line:
func startExploring(forTypes types: [SSDPType], onInterface interface: String = "en0") -> EmptyResult {
assert(_multicastSocket == nil, "Socket is already open, stop it first!")

why the default parameter on the signature of the method?