How to apply static ip address

chebarbudo · #1 (**permalink**) 03-12-2009

Hi there,
I have a Debian 5.0 server newly installed.
By default, the ip address is given by dhcp.

Code:

pegase:~# grep '^[^#]' /etc/network/interfaces
auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet dhcp
pegase:~# head -2 /etc/hosts
127.0.0.1       localhost
127.0.1.1       pegase.apltest  pegase

Then I modify the files so that they look like this:

Code:

pegase:~# grep '^[^#]' /etc/network/interfaces
auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet static
        address 192.168.1.251
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
pegase:~# head -2 /etc/hosts
127.0.0.1       localhost
192.168.1.251   pegase.apltest  pegase

Then I try to apply changes with:

Code:

pegase:~# /etc/init.d/networking restart

But at that point, I loose eth0:

Code:

pegase:~# ifconfig
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:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:560 (560.0 B)  TX bytes:560 (560.0 B)

And the only way to apply changes is to reboot the server.
Is this normal? How can I switch from dhcp to static address without rebooting?
Thanks for your help.
Santiago

chebarbudo · #2 (**permalink**) 03-12-2009

I found it...
It's because of the following statement:
allow-hotplug eth0
that should be replaced by
auto eth0

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