Pf Configuration Incompatible With Pf Program Version < HD >

If this error appears on a firewall appliance after a firmware upgrade: Navigate to .

The actual engine that inspects and filters packets at the system's core. pf configuration incompatible with pf program version

Navigate to the pfctl source directory (usually /usr/src/sbin/pfctl ). Run make clean && make && make install . If this error appears on a firewall appliance

If the binary itself is incompatible, you must ensure both the kernel and world (userland) are on the same version. pf configuration incompatible with pf program version

System libraries that pfctl relies on were updated to a version incompatible with the running kernel.