The value of msapTlsPlcyArpReplyAgent specifies the status of the special
ARP response mechanism in the system for ARP requests destined to
static or dynamic hosts associated with the MSAP.
'disabled' - the ARP reply function is not operational
'enabled' - the ARP reply function is enabled without
subscriber identification.
'enabledWithSubscrIdent' - the ARP reply function is enabled
with subscriber identification.