Speedtouch Ethernet + Slackware 10.0

Bonjour, je viens d'installer la slackware 10.0, je configure le reseau peinard. Ca se connecte c'est bien. Mais impossible d'aller sur le net. Voila la config reseau (enfin je pense le principal)

root@valium:/etc# adsl-start
. Connected!
root@valium:/etc# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
193.253.160.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 193.253.160.3 0.0.0.0 UG 0 0 0 ppp0
root@valium:/etc# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:26:54:10:1D:45
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:249 errors:0 dropped:0 overruns:0 frame:0
TX packets:273 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:17526 (17.1 Kb) TX bytes:26031 (25.4 Kb)
Interrupt:11 Base address:0xb000
root@valium:/etc# ifconfig ppp0
ppp0 Link encap:Point-to-Point Protocol
inet addr:81.251.141.133 P-t-P:193.253.160.3 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:30 (30.0 b) TX bytes:30 (30.0 b)
root@valium:/etc# ping www.google.fr
ping: unknown host www.google.fr
root@valium:/etc#