1 Title: snmp_extended_info: new inventory function which discovers the model name and serial number
9 The information about model name and serial number is discovered on all SNMP devices on which
10 the OIDs "1.3.6.1.2.1.47.1.1.1.1.4.1" or "1.3.6.1.2.1.47.1.1.1.1.4.1001" have value zero.
11 This means the device itself.