It seems to be that after upgrade to 2.2.3 changed behavior of getting info via SNMP - I can get info by snmpwalk, but cannot get via zabbix, because it's packs multiple values to single bulk request, and some old devices cannot answer correctly to this (but in version 2.2.2 it works fine). Please provide a possibility to disable "packing" of request to single request, or add check of such unsupported devices via bulk + get-next, if "no instance" returns for bulk.