Re: Changing host name

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On 04/06/2010 09:51 AM, Michael Thompson wrote:
> 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?
>
>   
How is your network address set (dhcp, hardcoded address)?  Does
/etc/hosts and/or /etc/resolv.conf change when you change the hostname
information?  If your address is setup via dhcp, what does a "tcpdump -i
eth0" show is happening when the hostname changes?    And why so many
errors on your eth0 nic *and* your loopback nic?  Are you using IPV4 or
IPV6?

Kevin
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