Hoary upgrade: no network connection

[Christoph Bier]

Hi all!

Sorry for my impatience, I already posted this message yesterday in
the user-group, but a machine without network connection is useless
for the corresponding user and we don't have a replacement machine.

After upgrading a Warty machine to Hoary and rebooting, the network
refuses to work. With Warty (and before rebooting after the upgrade)
the network was fine and I haven't a glue what's going wrong now.
Everything seems to be ok (I already checked the cables and switch):

$ ifconfig
eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:192.168.6.3  Bcast:192.168.6.255  Mask:255.255.255.0
          inet6 addr: fe80::208:a1ff:fe1c:ed20/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:480 (480.0 b)  TX bytes:3276 (3.1 KiB)
          Interrupt:11 Base address:0xa000

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:5737 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5737 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1618297 (1.5 MiB)  TX bytes:1618297 (1.5 MiB)

$ netstat -nr
Destination     Gateway         Genmask         Flags  MSS Fenster
irtt Iface
192.168.6.0     0.0.0.0         255.255.255.0   U        0 0
  0 eth0
0.0.0.0         192.168.6.1     0.0.0.0         UG       0 0
  0 eth0

$ cat /etc/resolv.conf
search lan.fli4l
nameserver 192.168.6.1

I can't even ping 192.168.6.1 from 192.168.6.3. I'm sending this
message from a different machine in the same network with
192.168.6.1 as gateway and nameserver, the same output from netstat
-nr and the same content in resolv.conf. BTW: no DHCP is running.

Any ideas what's going wrong here?

Regards,
     Christoph
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