KLDLOAD_RC=0
---KLDSTAT---
Id Refs Address                Size Name
 1    8 0xffffffff80200000  1ad8538 kernel
 2    1 0xffffffff81cd9000    7c288 ehci.ko
 3    1 0xffffffff81d56000    8c778 xhci.ko
 5    1 0xffffffff82601000    1b000 if_vlan.ko
 6    1 0xffffffff8261c000    22000 if_tap.ko
 8    1 0xffffffff82600000     1000 boom.ko
---KLDSTAT_M---
kldstat: can't find module boom: No such file or directory
KLDSTAT_M_RC=1
---KLDUNLOAD---
KLDUNLOAD_RC=0
---DMESG---
uuidoff: ether[0] vtnet0 if_softc=0xfffff8008971d480
uuidoff:   bytes at if_softc+928 (what if_getanyethermac copies into UUID node): 00:00:00:00:00:00
uuidoff:   real MAC from sdl (sdl_alen=6): 52:54:00:12:34:56
uuidoff: ether[1] tap0 if_softc=0xfffff801187cc680
uuidoff:   bytes at if_softc+928 (what if_getanyethermac copies into UUID node): 00:bd:e8:3f:01:00
uuidoff:   real MAC from sdl (sdl_alen=6): 00:bd:e8:3f:01:00
uuidoff: 2 IFT_ETHER interface(s); if_getanyethermac uses the FIRST
uuidoff: unloaded
DF2936: boom MOD_LOAD -> deliberately failing (ret 5)
DF2936: boom MOD_UNLOAD dispatched
module_register_init: MOD_LOAD (boom, ffffffff82600000, 0) error 5
DF2936: boom SYSUNINIT running (module destroyed at load time!)