Oy! The BSD/ifnet mechanisms don't currently give you that kind of detail. You'd have to get that from IOKit, and I don't know whether there is any standard way of representing wireless devices that IOKit knows about (Dean/Godfrey?). This is what 'ioreg' shows for Airport: | | | +-o radio@30000 <class AppleMacIODevice> | | | | +-o AirPortDriver <class AirPortDriver> | | | | +-o IOEthernetInterface <class IOEthernetInterface> | | | | | +-o IONetworkStack <class IONetworkStack> | | | | | +-o IONetworkStackUserClient <class IONetworkStackUserClient> | | | | +-o AirPortUserClient <class AirPortUserClient> | | | | +-o AirPortUserClient <class AirPortUserClient> 'airport' isn't going to work; and I don't know whether all wireless devices show up as 'radio'. What are you trying to do? There are some security concerns I am trying to address. The logic in my code will vary depending upon whether or not a net device I attach to is a wireless card or not. So there isn't any way to determine this inside a data link NKE? -- Brian Wotring ( brian@shmoo.com ) PGP KeyID: 0x9674763D