Monitor TPSec tunnels via SNMP?

[agrikk]

Heyas -

I have a pfSense box with two dozen IPSec tunnels and I would like to monitor their availability and traffic throughput via SNMP. I've enabled the bsnmpd SNMP service but the ifDescr OID (.1.3.6.1.2.1.2.2.1.2) entries only show the physical connections (like em0, em1, lo, etc) and none of the virtual interfaces like the P1 and/or P2 connections.

Is there a way to see this information?

I'd like to be able to see their status though my monitoring software (PRTG).