Загрузить модуль:

> ls /boot/kernel/ng_*.ko
...
/boot/kernel/ng_mppc.ko
...
> kldstat
Id Refs Address    Size     Name
 1   21 0xc0400000 99c650   kernel
 2    1 0xc0d9d000 6a45c    acpi.ko
 3   11 0xc23c4000 b000     netgraph.ko
 4    1 0xc23fd000 4000     ng_ether.ko
 5    1 0xc2402000 6000     ng_pppoe.ko
 6    1 0xc2408000 4000     ng_socket.ko
 7    1 0xc248e000 22000    linux.ko
 8    1 0xc2545000 3000     daemon_saver.ko
 9    1 0xc36f3000 4000     ng_mppc.ko
10    1 0xc2f4b000 2000     rc4.ko
11    1 0xc3592000 3000     ng_tee.ko
12    1 0xc36f7000 4000     ng_pptpgre.ko
13    1 0xc36fb000 5000     ng_ksocket.ko
14    1 0xc3700000 4000     ng_iface.ko
15    1 0xc3704000 7000     ng_ppp.ko
16    1 0xc3609000 3000     ng_tcpmss.ko
> kldload pf.ko