Pf Configuration Incompatible With Pf Program Version (2027)

pfctl -sr pfctl: DIOCGETRULES: Device not configured Not configured? That meant PF wasn’t even running. He checked the logs.

/var/log/messages: pfctl: /etc/pf.conf:87: syntax error /var/log/messages: pfctl: /etc/pf.conf:87: rule expands to a non-list element pf configuration incompatible with pf program version

Then the prayer:

But he knew the real story. The firewall had been working fine. Until the moment it wasn't. And the difference between those two moments was a single line in a changelog no one had read, and a list of IP addresses wrapped in the wrong kind of curly braces. pfctl -sr pfctl: DIOCGETRULES: Device not configured Not

The old PF (the one running on 7.4) had been lenient. It saw the curly braces, expanded the list in memory, and carried on. The new PF was a stricter grammarian. It saw the same syntax, declared it heresy, and refused to load any rules at all. Zero firewall. No state table. No blocking. No logging. /var/log/messages: pfctl: /etc/pf