I can confirm that the message "Usage: dhcp..." is no longer appearing in logs.
With the latest package network-manager 0.8.1+git.20100810t184654.ab580f4-0ubun It is replaced by time out: Sep 20 20:06:15 note381 NetworkManager[991]: <info> (wlan0): DHCPv4 state changed nbi -> preinit Sep 20 20:06:16 note381 dhclient: Listening on LPF/wlan0/00:22:fb:18:11:3a Sep 20 20:06:16 note381 dhclient: Sending on LPF/wlan0/00:22:fb:18:11:3a Sep 20 20:06:16 note381 dhclient: Sending on Socket/fallback Sep 20 20:06:16 note381 dhclient: DHCPREQUEST of 192.168.2.51 on wlan0 to 255.255.255.255 port 67 Sep 20 20:06:30 note381 dhclient: last message repeated 2 times Sep 20 20:06:30 note381 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3 Sep 20 20:06:33 note381 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4 Sep 20 20:06:37 note381 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10 Sep 20 20:06:47 note381 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 16 Sep 20 20:07:01 note381 NetworkManager[991]: <warn> (wlan0): DHCPv4 request timed out. Sep 20 20:07:01 note381 NetworkManager[991]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 20840 Manual setup via "iwconfig essid my_essid" "dhcp wlan0" still works without any problem. Should I file another bug report? -- dhclient3 not recognize -4 option sent by network manager https://bugs.launchpad.net/bugs/633568 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs