Pf Configuration Incompatible With Pf Program Version Extra Quality Jun 2026

The same issue can affect users on FreeBSD and other BSDs using binary updates. If a system upgrade is interrupted, or if only the kernel is updated via a source build but userland packages are left untouched, a mismatch occurs. FreeBSD users have reported these symptoms after an upgrade from 10.0-RELEASE to 10.1-RELEASE where the freebsd-update process failed to update all the components properly. In such cases, the pfctl binary ends up with a hash that does not match the expected hash for that release, while the kernel expects the newer version.

Troubleshooting "pf Configuration Incompatible with pf Program Version"

If you use freebsd-update :

A system update was interrupted, or only the kernel was updated without updating the rest of the base system.

If you just ran freebsd-update install or built a new world/kernel: pf configuration incompatible with pf program version

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: Write a script that compares kernel version with pfctl -V output and alerts if they differ. The same issue can affect users on FreeBSD

If you are seeing this error within a containerized environment or a virtualized jail, the issue might be upstream. The host machine’s kernel dictates the PF version for all child environments. If the jail's userland tools are newer than the host's kernel, the configuration will fail. In this case, you must upgrade the host system to match or exceed the version used within the jail.

Rewrite the commented lines using the current syntax patterns supported by your specific OS version. (Refer to your system's manual pages using man pf.conf to check exact keyword requirements). Step 4: Validate the Fix Run the dry-run command again: sudo pfctl -nf /etc/pf.conf Use code with caution. In such cases, the pfctl binary ends up