=== kldload df0609_trigger.ko ===
DF-0609 trigger module loaded. Write 1 to hw.df0609.trigger to fire.
KLDLOAD_RC=0
=== trigger: sysctl hw.df0609.trigger=1 ===
[ssh timed out — kernel panicked during the sysctl write]
RUN_EXIT=124 (timeout — guest down)

=== Serial console (boot.log) showing the panic ===
DF-0609: m=0xfffff80118649000 m_flags=0x8002 — calling netisr_characterize(NETISR_NETGRAPH=30, &mp, 0)
netisr_characterize: Unregistered isr 30
Fatal user address access from kernel mode from sysctl at 0000000000000000

Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic id = 1
fault virtual address	= 0x0
fault code		= supervisor read instruction, page not present
instruction pointer	= 0x8:0x0
current process		= 1304
kernel: type 12 trap, code=10

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      0:

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x0
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff80bccb70
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