ZyXEL ES3500-24 Switch Firmware 4.00(AABR.3)C0

Fixes: - Missing snmp on ES3500-24, MIB can’t display 1.3.6.1.2.1.17.2.15.1.6.xx (dot1dStpPortDesignatedRoot) and 1.3.6.1.2.1.17.2.15.1.8.xx (dot1dStpPortDesignatedBridge) information. - When SNMP GET OID 1.3.6.1.2.1.6.13.1.1, the Switch will reboot. - DUT might suspend or crash. - No web access after changing DUT back from DHCP client to fixed IP . - Using SNMP to select VLAN port number fail(1.3.6.1.2.1.17.7.1.4.3.1.3.1), sometimes. - Hardware-monitor temperature list sequence showed in CLI(or Web) mismatch with mib.