--- baseline ---
           netgraph      12   1.69K       0    390M       22
--- 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   1.96K    283K       0    390M    3.93K
--- control run (2000 drain-close cycles) ---
--- control run (2000 drain-close cycles) ---
... 500 rounds (drain/control)
... 1000 rounds (drain/control)
... 1500 rounds (drain/control)
... 2000 rounds (drain/control)
done: 2000 rounds (mode=drain/control)
           netgraph   2.32K    334K       0    390M    6.23K
--- second 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   3.98K    573K       0    390M    9.85K
--- module pinning check ---
kldunload: can't unload file: Device busy
 6    0 0xffffffff8260b000     1000 ng_tty.ko