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Thread: [SOLVED] DWL-G630 "No DHCPoffers received"

  1. #1
    Join Date
    Nov 2007
    Beans
    40

    [SOLVED] DWL-G630 "No DHCPoffers received"

    Hi,
    I have previously been using wireless networking through NM but it drops out a lot so I want to try another method. I have followed the instructions in the Manual Configuration but I get an error when I try to configure the DHCP client and then it doesn't work in the final step. Can anyone please help? Or if someone can help me get it working in wicd, I'm happy to cheat and use a GUI.
    Here's what happens when I follow the instructions:
    Code:
    general@simon-laptop:~$ lshw -C network
    WARNING: you should run this program as super-user.
      *-network               
           description: Ethernet interface
           product: 82557/8/9 Ethernet Pro 100
           vendor: Intel Corporation
           physical id: 9
           bus info: pci@0000:00:09.0
           logical name: eth0
           version: 09
           serial: 00:d0:59:11:a1:5a
           width: 32 bits
           clock: 33MHz
           capabilities: bus_master cap_list ethernet physical
           configuration: broadcast=yes driver=e100 driverversion=3.5.17-k4-NAPI firmware=N/A ip=10.1.1.2 latency=66 maxlatency=56 mingnt=8 module=e100 multicast=yes
      *-network
           description: Wireless interface
           product: RT2561/RT61 rev B 802.11g
           vendor: RaLink
           physical id: 0
           bus info: pci@0000:02:00.0
           logical name: wmaster0
           version: 00
           serial: 00:17:9a:82:7e:14
           width: 32 bits
           clock: 33MHz
           capabilities: bus_master cap_list logical ethernet physical wireless
           configuration: broadcast=yes driver=rt61pci latency=64 module=rt61pci multicast=yes wireless=IEEE 802.11g
    Is my wireless device called wmaster0? I also have a device called wlan1.
    Code:
    general@simon-laptop:~$ sudo dhclient -r wmaster0
    [sudo] password for general:
    There is already a pid file /var/run/dhclient.pid with pid 23509
    killed old client process, removed PID file
    Internet Systems Consortium DHCP Client V3.0.5
    Copyright 2004-2006 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/sw/dhcp/
    
    wmaster0: unknown hardware address type 801
    wmaster0: unknown hardware address type 801
    Listening on LPF/wmaster0/
    Sending on   LPF/wmaster0/
    Sending on   Socket/fallback
    Everything else seems to go fine until I get to the final step:
    Code:
    general@simon-laptop:~$ sudo dhclient wmaster0
    There is already a pid file /var/run/dhclient.pid with pid 134519120
    Internet Systems Consortium DHCP Client V3.0.5
    Copyright 2004-2006 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/sw/dhcp/
    
    wmaster0: unknown hardware address type 801
    wmaster0: unknown hardware address type 801
    Listening on LPF/wmaster0/
    Sending on   LPF/wmaster0/
    Sending on   Socket/fallback
    DHCPDISCOVER on wmaster0 to 255.255.255.255 port 67 interval 7
    DHCPDISCOVER on wmaster0 to 255.255.255.255 port 67 interval 8
    DHCPDISCOVER on wmaster0 to 255.255.255.255 port 67 interval 16
    No DHCPOFFERS received.
    No working leases in persistent database - sleeping.
    Hmmmm...then no internet. Any help greatly appreciated.

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    19,946
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: DWL-G630 "No DHCPoffers received"

    Your computer will not be at all happy with having two interfaces with two IP addresses. Since you are connected with your ethernet interface,
    ip=10.1.1.2
    please detach the wire and do:
    Code:
    sudo ifdown eth0
    wmaster0 is a phantom interface; why it's needed or what it does, I don't know. I do know it may be and, in my house, is ignored.

    Please try:
    Code:
    sudo iwconfig wlan1 essid <ur_essid>
    sudo dhclient wlan1
    This assumes you have no encryption, WEP, WPA and the like.

    Did you connect?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
    Join Date
    Nov 2007
    Beans
    40

    Re: DWL-G630 "No DHCPoffers received"

    Chilli,
    Thanks for your help. Still no joy unfortunately. Please see below. My network is WEP encrypted by the way. Also, I noticed this in the instructions:
    sudo iwconfig <interface> key HEX_KEY <<<-------- If using ASCII Equivalent, this is s:ASCII_KEY (please make note of the prefix s
    ****Additional Comand that may be needed -- sudo iwconfig <interface> key open <<<----See note below
    Do I need to specify open key? I think my router uses Open System Authenication. Any other ideas?

    Thanks,
    Simon

    Code:
    root@simon-laptop:/home/general# ifdown eth0
    ifdown: interface eth0 not configured
    root@simon-laptop:/home/general# iwconfig wlan1 essid WLAN
    root@simon-laptop:/home/general# dhclient wlan1
    There is already a pid file /var/run/dhclient.pid with pid 2343
    killed old client process, removed PID file
    Internet Systems Consortium DHCP Client V3.0.5
    Copyright 2004-2006 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/sw/dhcp/
    
    wmaster0: unknown hardware address type 801
    wmaster0: unknown hardware address type 801
    Listening on LPF/wlan1/00:17:9a:82:7e:14
    Sending on   LPF/wlan1/00:17:9a:82:7e:14
    Sending on   Socket/fallback
    DHCPDISCOVER on wlan1 to 255.255.255.255 port 67 interval 3
    DHCPDISCOVER on wlan1 to 255.255.255.255 port 67 interval 8
    DHCPDISCOVER on wlan1 to 255.255.255.255 port 67 interval 16
    DHCPDISCOVER on wlan1 to 255.255.255.255 port 67 interval 4
    No DHCPOFFERS received.
    No working leases in persistent database - sleeping.

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    19,946
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: DWL-G630 "No DHCPoffers received"

    Some hairy ape wrote a decent post on WEP: http://ubuntuforums.org/showthread.p...&highlight=wep

    The way to be sure you are using hex versus ascii is by key length. Valid key lengths are 5 (ASCII) and 10 (Hex) for 64-bit, 13 (ASCII) and 26 (Hex) for 128-bit WEP encryption. When you specify the key in iwconfig, if it is ascii, precede the key with s:

    Post back if you get stuck.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
    Join Date
    Nov 2007
    Beans
    40

    Re: DWL-G630 "No DHCPoffers received"

    Quote Originally Posted by chili555 View Post
    Some hairy ape wrote a decent post on WEP: http://ubuntuforums.org/showthread.p...&highlight=wep

    The way to be sure you are using hex versus ascii is by key length. Valid key lengths are 5 (ASCII) and 10 (Hex) for 64-bit, 13 (ASCII) and 26 (Hex) for 128-bit WEP encryption. When you specify the key in iwconfig, if it is ascii, precede the key with s:

    Post back if you get stuck.
    IT WORRRRRKKKKKKSSSSSSSSSSSS!!!!!!!!!!!!1111111111111 11!!!!!!!!!

    Thankyou so much. I think the problem was the wired connection was not being killed by ifdown. I tried "ifconfig eth0 down" and then I was able to connect using Wicd.

    Now I'll just figure out how to get wicd into a startup script and it'll be perfect (another reason for doing this is I want to swap from xfce to dwm). Again, thanks.

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