Netgraph/mpd5 stability issues

[Przemyslaw Frasunek]

> And in this one, can you please show *hook->hk_peer ?

(kgdb) print *hook->hk_peer
$2 = {
  hk_name = "\b\000\000\000
\000\000\000\004\000\000\000\001\000\000\000ŐRí\003\003ö\0248cmd4\000\000\000",
hk_private = 0x0, hk_flags = 0, hk_refs = 0,
  hk_type = 0, hk_peer = 0x0, hk_node = 0x0, hk_hooks = {le_next = 0x566226,
    le_prev = 0x99e79c03}, hk_rcvmsg = 0x38ef45, hk_rcvdata = 0x28d6a8a1}