I have an Ubuntu 13.10 32bit with latest BTsync user packages. I also have an Android box (Samsung HomeSync) running latest btsync android client. They are both on 1gbps lan network. The two boxes do not detect each other even if I enable LAN Sync. They just sit & wait. When I look with avahi-browse -a , I can see other services being announced from both boxes. Such as Ubuntu announcing its SSH access, my lan printer (on wifi) announcing its web server, the android box's XBMC announcing its upnp control points, its web server, its HomeSync app etc, but nothing related to BtSync. So how does BTSync announce its presence in the network? Doesn't it use Avahi / Zeroconf? If it doesn't, what does it use and what shall be done (maybe on the router) to make them see each other. I read somewhere that it sends multicast packets at port 3838 but I do not find any detailed explanation on it and what shall be done with it. any insights?