--- fixed: baseline ---
      netgraph_node       2     256       0    390M        2
--- fixed: leak run (2000 stall-close cycles) ---
... 500 rounds (stall/leak)
... 1000 rounds (stall/leak)
... 1500 rounds (stall/leak)
... 2000 rounds (stall/leak)
done: 2000 rounds (mode=stall/leak)
      netgraph_path       0       0       0    390M    3.91K
      netgraph_sock       0       0       0    390M    1.95K
           netgraph   1.95K    281K       0    390M    3.90K
      netgraph_hook       0       0       0    390M    3.91K
      netgraph_node   1.96K    345K       0    390M    3.92K
       netgraph_msg       0       0       0    390M    5.86K
     netgraph_apply       1      16       0    390M        1
--- fixed: second leak run (2000 more) ---
... 500 rounds (stall/leak)
... 1000 rounds (stall/leak)
... 1500 rounds (stall/leak)
... 2000 rounds (stall/leak)
done: 2000 rounds (mode=stall/leak)
      netgraph_path       0       0       0    390M    7.81K
      netgraph_sock       0       0       0    390M    3.91K
           netgraph   3.89K    560K       0    390M    7.79K
      netgraph_hook       0       0       0    390M    7.81K
      netgraph_node   3.91K    690K       0    390M    7.83K
       netgraph_msg       0       0       0    390M    11.7K
     netgraph_apply       1      16       0    390M        1
--- fixed: module unpinned? ---
kldunload: can't unload file: Device busy
kldunload_failed