CONFIG_NET_RADIO 

Forum: PCMCIA Wireless Network Adapter Issues
Re: wavelan turbo 11 mb will not answer ioctl calls (Mathieu Lacage)
Date: 2000, Aug 14
From: Jean Tourrilhes jt

Hi,   Did you configure your kernel with the CONFIG_NET_RADIO enabled ? It's in network devices and called wireless LAN support.   Jean

to: "CONFIG_NET_RADIO"