root@OpenWrt:~# ipkg install kmod-madwifi-fon_2.6.19.2\+r2414-20070601-fonera-1_mips.ipk 
Installing kmod-madwifi-fon (2.6.19.2+r2414-20070601-fonera-1) to root...
Configuring kmod-madwifi-fon
ath_rate_minstrel: Unknown symbol ieee80211_rate_unregister
ath_rate_minstrel: Unknown symbol ieee80211_rate_register
ath_pci: Unknown symbol _ieee80211_free_node
ath_pci: Unknown symbol ieee80211_check_rxnode
ath_pci: Unknown symbol ieee80211_rate_attach
ath_pci: Unknown symbol ieee80211_rate_detach
ath_pci: Unknown symbol ath_hal_reg_write
ath_pci: Unknown symbol ath_hal_reg_read
Done.