Problema di rete

[Alessandra V.]

Il risultato dei comandi ifconfig e route è questo:
  
  ale@ALE:~$ ifconfig
  eth0      Link encap:Ethernet  HWaddr 00:0A:E4:44:FC:D9
            inet  addr:130.251.67.23  Bcast:130.251.255.255  Mask:255.255.0.0
            inet6 addr: fe80::20a:e4ff:fe44:fcd9/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:1 errors:0 dropped:103 overruns:0 frame:0
            TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:60 (60.0 b)  TX bytes:90 (90.0 b)
            Interrupt:19 Base address:0x1800
  
  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:16159 errors:0 dropped:0 overruns:0 frame:0
            TX packets:16159 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:1461333 (1.3 MiB)  TX bytes:1461333 (1.3 MiB)
  
  ale@ALE:~$ route -n
  Kernel IP routing table
  Destination      Gateway          Genmask         Flags Metric  Ref    Use Iface
  130.251.0.0      0.0.0.0          255.255.0.0     U      0       0        0 eth0
  0.0.0.0          130.251.62.254   0.0.0.0          UG    0       0        0 eth0
   
  Ho provato anche questo:
  
  ale@ALE:~$ ifconfig ip 130.251.67.23 inet 255.255.0.0 up
    SIOCSIFADDR: Permission denied
    ip: ERROR while getting interface flags: No such device
    inet: Host name lookup failure
    ifconfig: `--help' gives usage information.
  
  I pc in rete sono 4, escluso il mio.
  
  Cosa è successo?
  
 Chiacchiera con i tuoi amici in tempo reale! 
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