The "PFSense by SNMP" template's documentation would be better if emphasized in the instructions section the importance of correctly setting the value of the  {$NET.IF.IFNAME.MATCHES} macro.

https://www.zabbix.com/integrations/pfsense#pfsense_snmp

The current default is

^em[0-9]+${code}
which is the "Intel(R) PRO/1000 Gigabit Ethernet adapter driver", and this configuration limits the template's out-of-the-box autodiscovery to this old adapter only.

Issue:

1. user associate template with host, and everything works, except the network interface discovery (important thing on firewalls)
2. Checking the logs does not help, as there is no error, the filtering doing its job
3. Checking the documentation does not help, as there is no reference to this setting in the installation instructions

Solution:

Please add a few words about this macro to the documentation in the "Setup" section. Example:

"

...

5. Check the type of your network card on your PFSense installation and update the value of the {$NET.IF.IFNAME.MATCHES} macro accordingly. Failing to set up this macro results in none or only a subset of the network interfaces discovered and monitored.
"