I don't think that it makes sense to configure a router with one physical network card. If another PC on the same cable segment tries to reach something it needs a router that has connection with more than the same network cable. greetings, paul <div class="gmail_quote">2009/12/13 Adel ESSAFI <<a href="mailto:adelessafi@gmail.com">adelessafi@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div dir="ltr">Hi list This is the first time I have to configure linux as router. I have a single network card for which I gave to IPs eth0 Link encap:Ethernet HWaddr 00:11:5B:72:7F:D9 inet addr:41.231.X.Y Bcast:41.255.255.255 Mask:255.255.255.0 inet6 addr: fe80::211:5bff:fe72:7fd9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2595 errors:0 dropped:0 overruns:0 frame:0 TX packets:2295 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1876353 (1.7 MiB) TX bytes:328059 (320.3 KiB) Interrupt:21 Base address:0x8000 eth0:1 Link encap:Ethernet HWaddr 00:11:5B:72:7F:D9 inet addr:192.168.10.10 Bcast:192.168.10.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:21 Base address:0x8000 and this is the default route [root@routeur ~]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 41.231.2.0 * 255.255.255.0 U 0 0 0 eth0 192.168.10.0 * 255.255.255.0 U 0 0 0 eth0 link-local * 255.255.0.0 U 1002 0 0 eth0 default 41.231.2.81 0.0.0.0 UG 0 0 0 eth0 The problem now, is when I configure a PC with an IP adress 192.168.10.X and I put the gateway as 192.168.10.10, I do not succeed to ping any PC. How can I route all the packages from eth0:1 to eth0?? note that I have configured the ip forward. echo 1> /proc/sys/net/ipv4/ip_forward Can you help me please. regards -- <a href="http://ilovefedora.blogspot.com/" target="_blank">http://ilovefedora.blogspot.com/</a> -- PhD candidate in Computer Science Address BP 108, Bureau de poste Tunis republique 1001 Tunis Tunisia tel: +216 97 246 706 fax: +216 71 391 166 </div> -- fedora-list mailing list <a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a> To unsubscribe: <a href="https://www.redhat.com/mailman/listinfo/fedora-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-list</a> Guidelines: <a href="http://fedoraproject.org/wiki/Communicate/MailingListGuidelines" target="_blank">http://fedoraproject.org/wiki/Communicate/MailingListGuidelines</a> </blockquote></div>