Loopback addres not available

grezly · 07-18-2006, 06:53 AM

I was trying to setup my wireless internet on my laptop.
Everything went allright except that my loopback adres is 'gone'.
I can't ping it.

Code:

root@flaptop:/home/dave/prog# ifconfig -a
...

lo        Link encap:Local Loopback
          LOOPBACK  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
...

It exist but doesn't respond. On the other side i can use the network (before I thought it wasn't available if you don't got a loopback address).

I have tried to bring it down and up but that doesn't make any sense.

b0uncer · 07-18-2006, 07:31 AM

Have you tried ifcfg lo? I just recall there was an ifcfg-lo file on my system one of these days..eth0 had one too, but the lo-file described the loopback interface, so maybe you need to use ifcfg?

Just a guess

grezly · 07-18-2006, 07:40 AM

ifcfg-lo doesn't exist on my system.
But with ifcfg it did work.

Code:

root@flaptop:/etc# ifcfg lo add 127.0.0.1
rdisc: no process killed

root@flaptop:/etc# ifconfig
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

root@flaptop:/etc# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.052 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.062 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.057 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.058 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.059 ms

--- 127.0.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.052/0.057/0.062/0.008 ms

Cheers