Issue with photon (0.5) after publish

[straccio]

I have this issue immediately after a publish?

Connection from: ::ffff:192.168.2.13, connId: 2
on ready { coreID: '',
ip: '::ffff:192.168.2.13',
product_id: 6,
firmware_version: 65535,
cache_key: '_1' }
Core online!
onSocketData called, but no data sent.
routeMessage got a NULL coap message { coreID: '' }
1: Core disconnected: socket close false { coreID: '',
cache_key: '_1',
duration: 0.722 }
Session ended for _1
Connection from: ::ffff:192.168.2.13, connId: 3
on ready { coreID: '',
ip: '::ffff:192.168.2.13',
product_id: 6,
firmware_version: 65535,
cache_key: '_2' }
Core online!
onSocketData called, but no data sent.
routeMessage got a NULL coap message { coreID: '' }