Mandriav 2006_x86_64: Weired networking behaviour (multiple problems)

From: Michael Badt (mibadt_at_gmail.com)
Date: 11/12/05

  • Next message: Steve Horsley: "Re: linux as router" 
    Date: Sat, 12 Nov 2005 14:17:47 +0200

    Hi,
    My Mandriva 2006 can't retain its connection to the local network and the
    Internet nor its routing table.

    Initially, when I boot, all works fine for a few minutes. Afterwords, I
    can't connect any other PC on local network, nor the Internet. Running
    dhclient, solves the problem temporarily, for a few minutes more.

    While no connection, /etc/resolv and routing table get changed.
    IN addition, during boot, Mandriva tries to configure my FireWire Interface
    as eth1 !! (Is this OK? seems weired to me).

    Another problem ?, while connected traceroute to MY ISP (actcom.net.il)
    couldn't complete and was terminated by myself after minutes !! (CTRL -C).
    Can somebody explain me the output of raceroute below? hat are the ****? As
    this is my ISP, I'd expect only 2 hops (local gw and ISP). instead I've got
    way too many. Why?

    Also note (at the end) copy of segment of syslog. It complains about eth0
    timeout, and contains hundreds of logs similar to the following: "kernel:
    printk: 3189 messages suppressed.
    Nov 12 13:13:32 10 kernel: Neighbour table overflow." Can this be related t
    the CUPS server? How can I remedy this problem?

    Sorry for the LONG and detailed info. Can somebody answer my questions and
    explain to me how to fix my configuration?

    Please advise (details below)

    Thanks a lot in advance !

    ==============Details==========================
    PC: AMD Athlon 64b/ 1GB RAM, 2 SATA HDs with integrated eth0 and firewire
    (IEE 1384).

    Linux: Manriva 2006x86_64 (64 b version), fresh installed, download (ftp)
    version, with ALL (security, bug and normal) updates installed. KDE 3.4
    environment.

    Network: Several PCs on a 10.0.0.x LAN. ADSL modem, converted as router, on
    10.0.0.138 acts as Internet gateway and DHCP server. (the modem has been
    verified to stay connected to the ISP/Internet during ALL period tests and,
    after the following tests had been completed, reported more than 100 hours
    for current connection status). During these tests, only the tested PC
    (10.0.0.1) was connected to the LAN with the minimum of services running.
    Due to problems (ADSL router lack of support, Firefox, PAN and others),
    I've disabled PV6 on that PC.

    Firewall: Both the ADSL router runs a NAT/Firewall and the Mandriva runs the
    default shorewall firewall as well (while connection failed, I temporarily
    disabled shorewall without any change in my connectivity).

    ========various outputs when initially connected==================

    +++++++++relevant dmesg after reboot
    eth1394: $Rev: 1247 $ Ben Collins <bcollins@debian.org>
    eth1394: eth0: IEEE-1394 IPv4 over 1394 Ethernet (fw-host0)
    eth1394: eth0: Could not allocate isochronous receive context for the
    broadcast channel
    forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.32.
    eth0: forcedeth.c: subsystem: 01458:e000 bound to 0000:00:0a.0
    eth0: no link during initialization.
    eth0: link up.

    ==========output of ifconfig============
    eth0 Link encap:Ethernet HWaddr 00:14:85:18:62:EE
              inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              RX packets:3565 errors:0 dropped:0 overruns:0 frame:0
              TX packets:168171 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:2881546 (2.7 MiB) TX bytes:7438174 (7.0 MiB)
              Interrupt:217 Base address:0xa000

    lo Link encap:Local Loopback
              inet addr:127.0.0.1 Mask:255.0.0.0
              UP LOOPBACK RUNNING MTU:16436 Metric:1
              RX packets:11083 errors:0 dropped:0 overruns:0 frame:0
              TX packets:11083 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:620931 (606.3 KiB) TX bytes:620931 (606.3 KiB)
    ===========output of route==================
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.0.0.0 * 255.0.0.0 U 10 0 0 eth0
    default mygateway.ar7 0.0.0.0 UG 10 0 0 eth0
    ===========output of traceroute to my ISP (discountinues)=================
     1 * * *
     2 v2.actcom.co.il (192.114.47.251) 57.709 ms 25.063 ms 26.183 ms
     3 rtr76.actcom.co.il (192.114.47.250) 25.951 ms 26.344 ms 26.694 ms
     4 * * *
     5 * * *
     6 * * *
     7 * * *
     8 * * *
     9 * * *
    10 * * *
    11 * * *
    12 * * *
    13 * * *
    14 * * *
    15 * * *
    16 * * *
    17 * * *
    18 * * *
    19 * * *
    20 * * *
    21 * * *
    22 * * *
    23 * * *
    24 * * *
    25 * * *
    26 * * *
    27 * * *
    28 * * *
    29 * * *
    30 * * *
    ==========output of ping to Yahoo============
    PING www.yahoo.com (68.142.197.86) 56(84) bytes of data.
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=1 ttl=53 time=295 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=2 ttl=53 time=312 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=3 ttl=53 time=297 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=4 ttl=52 time=286 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=5 ttl=53 time=259 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=6 ttl=52 time=248 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=7 ttl=52 time=241 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=8 ttl=53 time=235 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=9 ttl=53 time=261 ms
    64 bytes from www.yahoo.com (68.142.197.86): icmp_seq=10 ttl=53 time=273 ms

    --- www.yahoo.com ping statistics ---
    10 packets transmitted, 10 received, 0% packet loss, time 9003ms
    rtt min/avg/max/mdev = 235.760/271.213/312.303/24.769 ms
    ============cat /etc/resolv.conf==================
    nameserver 10.0.0.138
    search 0.0.138
    -------------lspci-----------
    00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev
    a3)
    00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3)
    00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
    00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
    00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3)
    00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio
    Controller (rev a2)
    00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev a2)
    00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
    a3)
    00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
    a3)
    00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2)
    00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
    00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
    00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
    00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
    00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
    00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
    HyperTransport Technology Configuration
    00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
    Address Map
    00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
    Controller
    00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
    Miscellaneous Control
    01:0a.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link
    Layer Controller (rev 01)
    05:00.0 VGA compatible controller: nVidia Corporation GeForce 6200
    TurboCache(TM) (rev a1)

    =========another ifconfig================================
    eth0 Link encap:Ethernet HWaddr 00:14:85:18:62:EE
              inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              RX packets:175 errors:0 dropped:0 overruns:0 frame:0
              TX packets:6014 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:181952 (177.6 KiB) TX bytes:256124 (250.1 KiB)
              Interrupt:217 Base address:0xa000

    lo Link encap:Local Loopback
              inet addr:127.0.0.1 Mask:255.0.0.0
              UP LOOPBACK RUNNING MTU:16436 Metric:1
              RX packets:1393 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1393 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:78319 (76.4 KiB) TX bytes:78319 (76.4 KiB)
    ==========another route NOTE CHANGE of GW !!==========================
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.0.0.0 * 255.0.0.0 U 10 0 0 eth0
    default 10.0.0.138 0.0.0.0 UG 10 0 0 eth0
    ==============Date=============
    Sat Nov 12 13:09:38 IST 2005
    ===========ping===============
    PING www.yahoo.com (68.142.197.79) 56(84) bytes of data.
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=1 ttl=52 time=229 ms
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=2 ttl=53 time=227 ms
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=3 ttl=53 time=227 ms
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=4 ttl=53 time=226 ms
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=5 ttl=53 time=228 ms
    64 bytes from www.yahoo.com (68.142.197.79): icmp_seq=6 ttl=52 time=226 ms

    --- www.yahoo.com ping statistics ---
    7 packets transmitted, 6 received, 14% packet loss, time 6007ms
    rtt min/avg/max/mdev = 226.349/227.632/229.635/1.174 ms
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.0.0.0 * 255.0.0.0 U 10 0 0 eth0
    default mygateway.ar7 0.0.0.0 UG 10 0 0 eth0
     
    ==========cat /etc/resolv.conf==========
    nameserver 10.0.0.138
    search 0.0.138
    ============ping to local ADSL router/gateway============
    PING 10.0.0.138 (10.0.0.138) 56(84) bytes of data.
    64 bytes from 10.0.0.138: icmp_seq=1 ttl=255 time=1.02 ms
    64 bytes from 10.0.0.138: icmp_seq=2 ttl=255 time=0.981 ms
    64 bytes from 10.0.0.138: icmp_seq=3 ttl=255 time=0.995 ms
    64 bytes from 10.0.0.138: icmp_seq=4 ttl=255 time=0.975 ms
    64 bytes from 10.0.0.138: icmp_seq=5 ttl=255 time=1.02 ms

    --- 10.0.0.138 ping statistics ---
    5 packets transmitted, 5 received, 0% packet loss, time 4005ms
    rtt min/avg/max/mdev = 0.975/0.999/1.024/0.019 ms
    =============Date============
    Sat Nov 12 13:19:40 IST 2005
    ==================================

    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    =======================================================================
    ================Following segment WITHOUT connection===================
    =======================================================================
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    ==================== ifconfig===================================
    eth0 Link encap:Ethernet HWaddr 00:14:85:18:62:EE
              inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              RX packets:1205 errors:0 dropped:0 overruns:0 frame:0
              TX packets:17729 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:293269 (286.3 KiB) TX bytes:807749 (788.8 KiB)
              Interrupt:217 Base address:0xa000

    lo Link encap:Local Loopback
              inet addr:127.0.0.1 Mask:255.0.0.0
              UP LOOPBACK RUNNING MTU:16436 Metric:1
              RX packets:4109 errors:0 dropped:0 overruns:0 frame:0
              TX packets:4109 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:230441 (225.0 KiB) TX bytes:230441 (225.0 KiB)
    ==================date============================================
    Sat Nov 12 13:24:57 IST 2005
    =====================route=======================================
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.0.0.0 * 255.0.0.0 U 10 0 0 eth0
    default 10.0.0.138 0.0.0.0 UG 10 0 0 eth0
    ==============cat /etc/resolv.conf=====================
    nameserver 10.0.0.138
    search 0.0.138
    ==============================================================

    ===========Connection reestablished by running dhclient===========

    ==========ping yahoo======================================
    Sat Nov 12 13:25:34 IST 2005
    PING www.yahoo.com (68.142.197.80) 56(84) bytes of data.
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=1 ttl=52 time=281 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=2 ttl=53 time=282 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=3 ttl=53 time=287 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=4 ttl=53 time=282 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=5 ttl=52 time=285 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=6 ttl=53 time=280 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=7 ttl=53 time=234 ms
    64 bytes from www.yahoo.com (68.142.197.80): icmp_seq=8 ttl=52 time=235 ms

    --- www.yahoo.com ping statistics ---
    8 packets transmitted, 8 received, 0% packet loss, time 7010ms
    rtt min/avg/max/mdev = 234.994/271.444/287.505/21.077 ms

    ==============route======================
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.0.0.0 * 255.0.0.0 U 0 0 0 eth0
    default mygateway.ar7 0.0.0.0 UG 0 0 0 eth0
    =============cat /etc/resolv.conf
    nameserver 10.0.0.138
    search ar7

    ==============part of /var/log/syslog============
    Nov 12 13:13:26 10 kernel: NETDEV WATCHDOG: eth0: transmit timed out
    Nov 12 13:13:27 10 kernel: printk: 3175 messages suppressed.
    Nov 12 13:13:27 10 kernel: Neighbour table overflow.
    Nov 12 13:13:32 10 kernel: printk: 3189 messages suppressed.
    Nov 12 13:13:32 10 kernel: Neighbour table overflow.

  • Next message: Steve Horsley: "Re: linux as router"

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