ethernet not working (FC4)

[Jerry Kazdan]

The tail of  /var/lib/dhcp/dhclient-eth0.lease is below (the earlier
parts are similar  but with an earlier expiration time).

Hope this helps resolve the problem.
   -- Jerry

/lease {
  interface "eth0";
  fixed-address 157.181.227.44;
  filename "pxelinux.0";
  option subnet-mask 255.255.254.0;
  option routers 157.181.227.254;
  option dhcp-lease-time 3600;
  option dhcp-message-type 5;
  option domain-name-servers 157.181.226.4,157.181.226.5;
  option dhcp-server-identifier 157.181.226.3;
  option ntp-servers 157.181.226.3;
  option broadcast-address 157.181.227.255;
  option host-name "dhcp44.cs.elte.hu";
  option domain-name "cs.elte.hu";
  renew 4 2005/8/25 15:14:19;
  rebind 4 2005/8/25 15:42:46;
  expire 4 2005/8/25 15:50:16;
}


On 8/25/05, Paul Howarth <paul at city-fan.org> wrote:
> Jerry Kazdan wrote:
> > I just updated my laptop from   Fedora Core 3 (kernel  2.6.9-1.667)
> >                            to   Fedora Core 4 (kernel: 2.6.11-1.1369_FC4)
> > Now eth0 (ethernet) does not correctly work, although it did work with
> FC3.
> > I am using a DHCP connection at this university with everything assigned
> > automatically.  
> > ==> On this laptop etho (ethernet) the identical connection works
> > perfectly with Knoppix 3.9 which uses kernel 2.6.11, so I know it is
> > not the hardware nor the DHCP server nor routers along the way.
> > 
> > Here are some details:
> > 
> > 1. When I first booted to the new FC4, there was no ethernet.  The boot
> > screen said [eth0 failed] (although from dmesg it recognized the
> > ethernet card).  I had the identical problem earlier with the following
> FC3
> > update kernels: 
> >         2.6.12-1.1372_FC3
> >         2.6.11-1.35_FC3
> >         2.6.11-1.27_FC3
> > which is why I reverted to the older kernel 2.6.9-1.667, which did work. 
> 
> > Note that  eth0 works perfectly with Knoppix 3.9; it uses kernel 2.6.11. 
> > 
> > 2. Then I changed grub.conf, adding "acpi=ht" so the line reads:
> >   kernel /vmlinuz-2.6.11-1.1369_FC4 ro root=LABEL=/1 vga=773 acpi=ht
> > 
> > This  helped a bit since now I DHCP _does work_ and I can connect to
> > the local sub-net, but NOT elsewhere.  The problem is not the
> > nameserver since if I use the numerical IP address I get the same
> > error, as the following test shows:
> >    > ssh 130.91.49.156
> >      ssh: connect to host 130.91.49.156 port 22: Network is unreachable
> > 
> > 3.  When I use the Fedora menu item "Network" and look under "hosts",
> > it does not seem to be using my /etc/hosts file since my copy has a few
> > additional items (see below).  
> > 
> > 4.  I changed  gnome.conf to turn-off acpi and disable SELinus (so
> > "acpi=off selinux=0") and rebooted but that did not help.
> > 
> > Any suggestions?
> > 	Jerry
> > 
> > 
> > See below for more data, particularly from dmesg, ifconfig and netstat.
> > 
> > My Hardware: Dell Inspiron 9300 (laptop).  See dmesg just below for the
> > ethernet card -- which as you can see this FC4 kernel does recognize.
> > 
> > I am NOT using the service "NetworkManager".
> > 
> > Here are items from dmesg (some of which may be irrelevant), ifconfig,
> > and netstat:
> > 
> >    -------------------- snips from dmesg
> ----------------------------------
> > eth0: Broadcom 4400 10/100BaseT Ethernet 00:11:43:77:ae:ab
> > ieee80211_crypt: registered algorithm 'NULL'
> > ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.0.0
> > ipw2200: Copyright(c) 2003-2004 Intel Corporation
> > 
> > b44: eth0: Link is down.
> > codec_semaphore: semaphore is not ready [0x1][0x700300]
> > codec_write 1: semaphore is not ready for register 0x54
> > codec_semaphore: semaphore is not ready [0x1][0x700300]
> > b44: eth0: Link is up at 10 Mbps, half duplex.
> > b44: eth0: Flow control is off for TX and off for RX.
> > 
> > eth0: no IPv6 routers present
> >    -----------------------------------------------------
> > 
> >>netstat -rn
> > 
> > Kernel IP routing table
> > Destination     Gateway         Genmask         Flags   MSS Window  irtt
> Iface
> > 157.181.226.0   0.0.0.0         255.255.254.0   U         0 0          0
> eth0
> > 169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0
> eth0
> 
> You don't have a default route, This should normally come from dhcp.
> 
> What's in /var/lib/dhcp/dhclient-eth0.leases?
> 
> Paul.
> 
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