Loopback interface doen't appear

Linux and Unix-Like Linux
1

Hi all, i have a problem with (Network in Linux) .. my issue with a HW appliance has openfiler 2.3 and is used for File Sharing using samba .. the problem is when i try to list all configured network interfaces using ifconfig -a .. i can't see the loopback interface, Although the file /etc/sysconfig/network/ifcfg-lo exist :wall: and here is it's content

[root@localhost network-scripts]# cat ifcfg-lo
DEV...ICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

I have tried ifdown and ifup lo .. ddn't work
I have also tried to service netwrok stop/start .. didn't work
I have tried /etc/init.d/network stop/start .. bad news too

Here is the output of hosts file

[root@localhost]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost

Any recommendation will by appreciated.

2

What does your /etc/sysconfig/network say? It should have the following entry:

NETWORKING=yes
3
4

Just turn up the loop back interface up.
type --- ifconfig lo up
then restart the network using --service network restart

Now ,ifconfig will show all your interfaces.