Hoary upgrade: no network connection

[Christian Bjälevik]

Christoph Bier wrote:
> 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

What does 'sudo ethtool eth0' tell you? One of my machines seems to have
trouble with autonegotiation but if I set the speed hard everything
works again.

Sincererly
-- 
Christian     .-.    Bjälevik
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