[root@localhost Desktop]# uname -r
2.6.17-13mdv
[root@localhost Desktop]# insmod ./zd1211rw.ko
insmod: error inserting './zd1211rw.ko': -1 Unknown symbol in module
[root@localhost Desktop]# modprobe ieee80211softmac ieee80211
FATAL: Error inserting ieee80211softmac (/lib/modules/2.6.17-13mdv/kernel/net/ieee80211/softmac/ieee80211softmac.ko.gz): Unknown symbol in module, or unknown parameter (see dmesg)