Acme Packet SBC and SNMP authentication failure traps strange behavior

Using ESBC 3900 running SCZ8.4.

Under system-config, the parameter enable-snmp-auth-traps is set to enabled.

1) It seems that the SBC is sending out a SNMP trap with trap type apSysMgmtAuthenticationFailedTrap (OID 1.3.6.1.4.1.9148.3.2.6.0.16) EVERY TIME that an SSH user logs out of the system. Furthermore, the SBC is not sending this trap when a user fails SSH authentication; instead the trap is sent every time a user closes an SSH session, whether the user was autheticated or failed authentication.

2) The generic SNMP authenticationFailure trap (OID 1.3.6.1.6.3.1.1.5.5) should be sent when "The SNMPv2 agent received a protocol message that was not properly authenticated" - for example if someone sends an SNMP GET request with the wrong community string. However, this trap is never sent out.