mpd厨はUPDATINGの↓読んでない屑なので、スルー願います。
20040819:
Netgraph changed its message format slightly to align the data
portion well on 64 bit machines.
Netgraph using utilities (e.g. ngctl, nghook, ppp, mpd,
pppoed, bluetooth, ATM) should be recompiled when a new kernel
is installed.