If you cannot upgrade the kernel (e.g., in a production environment), you might need to use an older pfctl that matches the kernel.
To resolve this issue, your first move should be a system reboot. If you have recently performed a binary update (like freebsd-update ), the kernel needs to restart to initialize the new PF structures. If a reboot doesn't fix it, you should verify that your world and kernel are in sync. Running mismatched versions of the operating system's base components is the most frequent culprit. For those managing custom builds, ensuring that the SRC_BASE matches the running kernel is vital. pf configuration incompatible with pf program version
The you ran that triggered this error message. If you cannot upgrade the kernel (e
# Running PF kernel version sysctl net.inet.pf.version If a reboot doesn't fix it, you should
This will parse the file and report any specific syntax errors or unsupported keywords without applying changes. 3. Update the Package Database (FreeBSD)