Due to the ability to set the "hostname" via Hostname or HostnameItem the actual value of an agent's hostname can be ambiguous.

It would be useful to have ability to know current value (defined for example by Hostname=dummy or by HostnameItem=system.run[echo dummy-dummy]) of internal "zabbix hostname" (used to perform active checks) using passive a check.

So, it's an ask to implement new feature - add new key like "agent.hostname"

This would help for troubleshooting when setting up active checks for new monitored hosts.