fixes issue #556, setting upnp ttl to 0.  Anything other than 0 is not stable for all routers
fixes issue #556, setting upnp ttl to 0.  Anything other than 0 is not stable for all routers

MelvinTo/firewalla,MelvinTo/firewalla,firewalla/firewalla,firewalla/firewalla,firewalla/firewalla,firewalla/firewalla,MelvinTo/firewalla,firewalla/firewalla,MelvinTo/firewalla,MelvinTo/firewalla