Add wsdd support

[Schimmelreiter]

Greetings!

Maybe you could add wsdd (WS-Discovery) support too?

There is a wsdd+llmnr-Responder here:
https://github.com/tobiaswaldvogel/openwrt-addpack/tree/master/wsdd/src
but it doesn't support IPv6.

It would be great if we could have all three at the same time:
wsdd AND llmnr AND IPv6 support.

[tklauser]

Thanks for the suggestion. I'll have a look at it.

[Schimmelreiter]

That would be pretty cool.

Just in case it helps to motivate you:
Your llmnrd is now shipped to hundred thousands of satellite/cable/DVB-T set top boxes as part of the open source set top box system "Enigma2" when running OpenATV, OpenViX, OpenHDF, OpenBlackHole, ... images.

Having a WSDD would help users of such STB to find the SMB shares of those boxes inside their network when running Windows or Apple OS on their desktop systems ...
... and in the end, we could finally get rid of that ancient NetBIOS (over TCP/IP).