J'ai fait ce que vous m'avez suggéré et voici ce que j'ai obtenu:
[root@localhost ~]# ping
www.google.fr
connect: Network is unreachable
[root@localhost ~]# ping 66.249.85.99
connect: Network is unreachable
[root@localhost ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:C0:9F:97:35:88
inet adr:192.168.1.60 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::2c0:9fff:fe97:3588/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:44 errors:0 dropped:0 overruns:0 frame:0
TX packets:46 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:3830 (3.7 KiB) TX bytes:4992 (4.8 KiB)
Interruption:22 Adresse de base:0x6400
lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1170 errors:0 dropped:0 overruns:0 frame:0
TX packets:1170 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:3804028 (3.6 MiB) TX bytes:3804028 (3.6 MiB)
sit0 Link encap:IPv6-dans-IPv4
NOARP MTU:1480 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 lg file transmission:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@localhost ~]# netstat -rn
Table de routage IP du noyau
Destination Passerelle Genmask Indic MSS Fenêtre irtt Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
[root@localhost ~]# more /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 192.168.1.1