network device doesn't shutdown in win2k8 when hibernate

Hi,

My bus driver will enumerate some NIC devices. A NDIS5.1 running on
win2k3 and a NDIS6.0 running on win2k8 will service these NIC devices.
When win2k8 system is hibernating, these NIC devices didn’t shutdown by
OS like win2k3 did. Is that a regular behavior or I report some wrong
power flag to system in win2k8?

thanks
wayne