Changing host name

[ka1ifq]

"On 10:51:14 am Michael Thompson <maverickapollo at googlemail.com> said"
> When I change the hostname on my fedora 12 box, from the installation
> default of localhost.localdomain, the network dies until it is reset back.
>
> I'm changing the hostname by the Network control applet in Gnome, and
> have checked that /etc/sysconfig/network and it lists the following
>
> NETWORKING=yes
> HOSTNAME=feddesk
>
> ifconfig shows
>
> eth0      Link encap:Ethernet  HWaddr 00:0C:29:D1:7F:B3
>           inet6 addr: fe80::20c:29ff:fed1:7fb3/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:101 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:13048 (12.7 KiB)  TX bytes:258 (258.0 b)
>
> 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:18 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:1320 (1.2 KiB)  TX bytes:1320 (1.2 KiB)
>
> I cant understand why the act of changing the hostname would kill the
> network, has anyone got any ideas?
>
> --
> Michael Thompson
> http://maverickapollo.wordpress.com

Note that for some reason there is no 'inet addr:' on your eth0, could be a 
clue to what has happened.
-- 
2.6.27.45-0.1-default GNU/Linux