I have the same problem after upgrading from Feisty to Gutsy but using WEP.
Network controller: RaLink RT2561/RT61 802.11g PCI
dmesg: [ 7127.812000] wlan0: Initial auth_alg=0 [ 7127.812000] wlan0: authenticate with AP 00:x:x:x:x:x [ 7127.816000] wlan0: RX authentication from 00:x:x:x:x:x (alg=0 transaction=2 status=0) [ 7127.816000] wlan0: authenticated [ 7127.816000] wlan0: associate with AP 00:x:x:x:x:x [ 7127.816000] wlan0: RX AssocResp from 00:x:x:x:x:x (capab=0x451 status=0 aid=1) [ 7127.816000] wlan0: associated [ 7127.820000] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 7127.884000] wlan0: duplicate address detected!
lsmod|grep rt: rt61pci 24576 0 rt2x00pci 11520 1 rt61pci rt2x00lib 19712 2 rt61pci,rt2x00pci rfkill 8208 1 rt2x00lib mac80211 171016 4 rc80211_simple,rt61pci,rt2x00pci,rt2x00lib input_polldev 5896 1 rt2x00lib crc_itu_t 3072 1 rt2x00lib eeprom_93cx6 3200 1 rt61pci
I have the same problem after upgrading from Feisty to Gutsy but using WEP.
Network controller: RaLink RT2561/RT61 802.11g PCI
dmesg: NETDEV_ CHANGE) : wlan0: link becomes ready
[ 7127.812000] wlan0: Initial auth_alg=0
[ 7127.812000] wlan0: authenticate with AP 00:x:x:x:x:x
[ 7127.816000] wlan0: RX authentication from 00:x:x:x:x:x (alg=0 transaction=2 status=0)
[ 7127.816000] wlan0: authenticated
[ 7127.816000] wlan0: associate with AP 00:x:x:x:x:x
[ 7127.816000] wlan0: RX AssocResp from 00:x:x:x:x:x (capab=0x451 status=0 aid=1)
[ 7127.816000] wlan0: associated
[ 7127.820000] ADDRCONF(
[ 7127.884000] wlan0: duplicate address detected!
lsmod|grep rt: simple, rt61pci, rt2x00pci, rt2x00lib
rt61pci 24576 0
rt2x00pci 11520 1 rt61pci
rt2x00lib 19712 2 rt61pci,rt2x00pci
rfkill 8208 1 rt2x00lib
mac80211 171016 4 rc80211_
input_polldev 5896 1 rt2x00lib
crc_itu_t 3072 1 rt2x00lib
eeprom_93cx6 3200 1 rt61pci