uuidoff: sizeof(struct ifnet)             = 928
uuidoff: offsetof(struct arpcom,ac_enaddr)= 928
uuidoff: sizeof(struct vtnet_softc)       = 1040
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: 1 IFT_ETHER interface(s); if_getanyethermac uses the FIRST