OPNsense rsyslog not capturing its own hostname

[novecat]

Hi All,

I am using Fluentd to capture syslog and I just realized that the Firewall's hostname is not included in the rsyslog. (examples below). Comparing capture from Netflow, we can clearly see the host IP of the Firewall.

My current project is to gather 6 different firewalls syslog for record purpose hence if they are not differentiated either by hostname or their IPs, it will be rather confusing.

Fluentd itself has an alternative to work this out, but it will be tedious work.
Any chance if there are settings on OPNsense to tweak this?

Thanks