[os-net-snmp plugin] SNMP Engine ID regenerated at startup

[9axqe]

I have a strange issue whereby the SNMP ID (visible in /var/net-snmp/snmpd.conf, "oldEngineID") is regenerated every time opnsense boots.
It sounds similar to https://github.com/net-snmp/net-snmp/issues/821, but the dev indicated it's fixed in an earlier release of net-snmp.

Anyone else seeing this?