root@neutrino:~# modprobe -r ath_pci
root@neutrino:~# udevmonitor --env
udevmonitor will print the received events for:
UDEV the event which udev sends out after rule processing
UEVENT the kernel uevent

UEVENT[1202405658.290660] add      /devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0 (pci)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
SUBSYSTEM=pci
PHYSDEVBUS=pci
PCI_CLASS=20000
PCI_ID=168C:0013
PCI_SUBSYS_ID=168C:1026
PCI_SLOT_NAME=0000:04:00.0
MODALIAS=pci:v0000168Cd00000013sv0000168Csd00001026bc02sc00i00
SEQNUM=1448

UEVENT[1202405658.312972] add      /module/ath_pci (module)
ACTION=add
DEVPATH=/module/ath_pci
SUBSYSTEM=module
SEQNUM=1449

UDEV  [1202405658.315656] add      /module/ath_pci (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/ath_pci
SUBSYSTEM=module
SEQNUM=1449
UDEVD_EVENT=1

UDEV  [1202405658.315698] add      /bus/pci/drivers/ath_pci (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/pci/drivers/ath_pci
SUBSYSTEM=drivers
SEQNUM=1450
UDEVD_EVENT=1

UEVENT[1202405658.605816] add      /class/net/wifi0 (net)
ACTION=add
DEVPATH=/class/net/wifi0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=wifi0
IFINDEX=29
SEQNUM=1451

UDEV  [1202405658.606657] add      /devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0 (pci)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
SUBSYSTEM=pci
PHYSDEVBUS=pci
PCI_CLASS=20000
PCI_ID=168C:0013
PCI_SUBSYS_ID=168C:1026
PCI_SLOT_NAME=0000:04:00.0
MODALIAS=pci:v0000168Cd00000013sv0000168Csd00001026bc02sc00i00
SEQNUM=1448
UDEVD_EVENT=1

UDEV  [1202405658.608897] add      /class/net/wifi0 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/wifi0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=wifi0
IFINDEX=29
SEQNUM=1451
UDEVD_EVENT=1

UDEV  [1202405660.676109] add      /class/net/ath0 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=30
SEQNUM=1452
UDEVD_EVENT=1

UEVENT[1202405665.716620] remove   /class/net/ath0 (net)
ACTION=remove
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=30
SEQNUM=1453

UDEV  [1202405665.718024] remove   /class/net/ath0 (net)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=30
SEQNUM=1453
UDEVD_EVENT=1

UEVENT[1202405715.875451] add      /class/net/ath0 (net)
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=31
SEQNUM=1454

UEVENT[1202405715.897414] move     /class/net/ath1 (net)
ACTION=move
DEVPATH=/class/net/ath1
SUBSYSTEM=net
DEVPATH_OLD=/class/net/ath0
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=31
SEQNUM=1455

UDEV  [1202405717.957792] add      /class/net/ath1 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/ath1
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=31
SEQNUM=1454
UDEVD_EVENT=1
COMMENT=PCI device 0x168c:0x0013 (ath_pci)
MATCHIFTYPE=1
INTERFACE_NEW=ath1
INTERFACE_OLD=ath0

UDEV  [1202405717.959469] move     /class/net/ath1 (net)
UDEV_LOG=3
ACTION=move
DEVPATH=/class/net/ath1
SUBSYSTEM=net
DEVPATH_OLD=/class/net/ath0
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=31
SEQNUM=1455
UDEVD_EVENT=1