Juniper Junos 10.4 prior to 10.4S15, 11.4 prior to 11.4R9, 11.4X27 prior to 11.4X27.44, 12.1 prior to 12.1R7, 12.1X44 prior to 12.1X44-D20, 12.1X45 prior to 12.1X45-D15, 12.2 prior to 12.2R6, 12.3 prior to 12.3R3, 13.1 prior to 13.1R3, and 13.2 prior to 13.2R1, when Proxy ARP is ...