Hi @joses.
I downgraded to JUNOS 12.3X48-D25.3 but nothing same result !
Client IP Address: 192.168.2.163 Hardware Address: XX:XX:XX:XX:XX:5e State: BOUND(LOCAL_SERVER_STATE_BOUND) Lease Expires: 2016-11-21 12:43:48 GMT Lease Expires in: 3221 seconds Lease Start: 2016-11-21 11:31:12 GMT Last Packet Received: 2016-11-21 11:43:48 GMT Incoming Client Interface: vlan.12 Server Identifier: 192.168.12.3 Session Id: 306 Client Pool Name: LAN2