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Thread: How To: Manual Network Configuration without the need for Network Manager

  1. #771
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    Re: How To: Manual Network Configuration without the need for Network Manager

    OK. Here's ifconfig in the state where I enabled wireless [have to bring down eth0 or connection to the Web doesn't work. different from 8.04 where whichever interface is working seems to be used. this is b4 I took eth0 down]

    eth0 Link encap:Ethernet HWaddr 00:16:36:b3:b4:24
    UP BROADCAST RUNNING MULTICAST MTU:64 Metric:1
    RX packets:8 errors:0 dropped:0 overruns:0 frame:0
    TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:2295 (2.2 KB) TX bytes:1835 (1.8 KB)

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    inet6 addr: ::1/128 Scope:Host
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:3592 errors:0 dropped:0 overruns:0 frame:0
    TX packets:3592 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:168832 (168.8 KB) TX bytes:168832 (168.8 KB)

    wlan0 Link encap:Ethernet HWaddr 00:18:de:1c:27:7e
    inet addr:192.168.2.47 Bcast:192.168.2.255 Mask:255.255.255.0
    inet6 addr: fe80::218:deff:fe1c:277e/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:6 errors:0 dropped:0 overruns:0 frame:0
    TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:1450 (1.4 KB) TX bytes:4427 (4.4 KB)

    wmaster0 Link encap:UNSPEC HWaddr 00-18-DE-1C-27-7E-37-37-00-00-00-00-00-00-00-00
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
    Here is lshw -C network
    This is after I took eth0 down

    *-network
    description: Wireless interface
    product: PRO/Wireless 3945ABG [Golan] Network Connection
    vendor: Intel Corporation
    physical id: 0
    bus info: pci@0000:02:00.0
    logical name: wmaster0
    version: 02
    serial: 00:18:de:1c:27:7e
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless
    configuration: broadcast=yes driver=iwl3945 ip=192.168.2.47 latency=0 module=iwl3945 multicast=yes wireless=IEEE 802.11abg
    *-network DISABLED
    description: Ethernet interface
    product: PRO/100 VE Network Connection
    vendor: Intel Corporation
    physical id: 8
    bus info: pci@0000:05:08.0
    logical name: eth0
    version: 02
    serial: 00:16:36:b3:b4:24
    size: 100MB/s
    capacity: 100MB/s
    width: 32 bits
    clock: 33MHz
    capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.23-k4-NAPI duplex=full firmware=N/A latency=64 link=yes maxlatency=56 mingnt=8 module=e100 multicast=yes port=MII speed=100MB/s
    *-network DISABLED
    description: Ethernet interface
    physical id: 1
    logical name: pan0
    serial: 06:4d:21:03:14:9e
    capabilities: ethernet physical
    configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes
    Hope this tells you something.

    Paul

  2. #772
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    Re: How To: Manual Network Configuration without the need for Network Manager

    This part tells me your interface is disabled:

    *-network DISABLED
    description: Ethernet interface
    product: PRO/100 VE Network Connection
    vendor: Intel Corporation
    physical id: 8
    bus info: pci@0000:05:08.0
    logical name: eth0
    version: 02
    serial: 00:16:36:b3:b4:24
    size: 100MB/s
    capacity: 100MB/s
    width: 32 bits
    clock: 33MHz
    capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=e100

    e100 is a wired interface. Something is happening to disable the interface. Have you checked:
    dmesg | more

  3. #773
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    Re: How To: Manual Network Configuration without the need for Network Manager

    kevdog-

    I haven't checked dmesg yet, but when that data was collected eth0 was down because I executed

    sudo ifconfig eth0 down

    so that the system would use wlan0 to connect to the internet. This seems to be necessary with 8.10. Note that there is no IP address assigned to that interface. If I did that in 8.04 it would have one.

    Paul
    Last edited by drpaul; November 20th, 2008 at 05:36 AM. Reason: added clarity?

  4. #774
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    Re: How To: Manual Network Configuration without the need for Network Manager

    Ok, so did you get the problem solved?

  5. #775
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    Re: How To: Manual Network Configuration without the need for Network Manager

    Kevdog-

    No. I'm just about to reboot into 8.10. What should I look for in dmesg?

    Paul

  6. #776
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    Re: How To: Manual Network Configuration without the need for Network Manager

    Make sure you take the wireless interface down, and then enable the wired interface

    something like

    sudo ifconfig wlan0 down
    sudo ifconfig eth0 up


    Dont post all of desmg. If you do end up posting part of it, only the part relevant to your network card -- it will be in a group so it should be easy to spot!

  7. #777
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    Re: How To: Manual Network Configuration without the need for Network Manager

    kevdog-

    Summary

    Did as you suggested. dmesg contains only 2 lines that refer to eth0

    [ 4.223709] e100 0000:05:08.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
    [ 4.223771] e100 0000:05:08.0: setting latency timer to 64
    [ 4.250272] e100 0000:05:08.0: PME# disabled
    [ 4.250663] e100: eth0: e100_probe: addr 0xd8000000, irq 20, MAC addr 00:16:36:b3:b4:24
    [ 130.088519] pan0: Dropping NETIF_F_UFO since no NETIF_F_HW_CSUM feature.
    [ 135.180135] e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
    Not very informative to me.

    After taking wlan0 down and eth0 up, I tried sudo dhclient eth0

    Result

    ubuntu@ubuntu:~$ sudo dhclient eth0
    Internet Systems Consortium DHCP Client V3.1.1
    Copyright 2004-2008 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/sw/dhcp/

    wmaster0: unknown hardware address type 801
    SIOCSIFADDR: No buffer space available
    wmaster0: unknown hardware address type 801
    Listening on LPF/eth0/00:16:36:b3:b4:24
    Sending on LPF/eth0/00:16:36:b3:b4:24
    Sending on Socket/fallback
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
    send_packet: Message too long
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
    send_packet: Message too long
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
    send_packet: Message too long
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
    send_packet: Message too long
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
    send_packet: Message too long
    DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
    send_packet: Message too long
    No DHCPOFFERS received.
    No working leases in persistent database - sleeping.
    Any ideas?

    Paul

  8. #778
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    Re: How To: Manual Network Configuration without the need for Network Manager

    Can you post the following -- I don't know why you have a wmaster0. Is this a networking card?

    lshw -C network

    lsmod

  9. #779
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    Re: How To: Manual Network Configuration without the need for Network Manager

    kevdog-

    This has gotten a little weird. I have attached files with the output from the commands you mentioned, but ...

    I happened to right click on the little Network Manager icon on the top bar and looked at the connection configuration for eth0. The window that pops up says it has an IP address [the one that I normally get from my router]. However, in a terminal window the ifconfig command does not show that, and ping doesn't work anywhere [says network unreachable].

    As to the hardware, it's a hp dv6000 series notebook with Intel chips. It has been working fine through several versions of Ubuntu.

    I'm clueless but thankful for your help.

    Paul
    Attached Files Attached Files

  10. #780
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    Re: How To: Manual Network Configuration without the need for Network Manager

    Are you trying to connect with the wired e100 driver or the intel iwl driver? Are you using the wired or wireless interface?

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