New devices will not connect until you restart the Zabbix server
After adding a new device as a SNMP or as an agent, the device hangs in the connection status "unknown". until you complete command service zabbix-server restart.
After restart service new device have status "Available" and correct work.
Zabbix 6.4.5
After restart service new device have status "Available" and correct work.
Zabbix 6.4.5