Hello, I'm really gonna to be crazy with networking on two servers. They have the same error but I can't figure out why. So I really need your help ! Code: ~# ifup eth0 SIOCADDRT: No such process Failed to bring up eth0. Code: ~# /etc/init.d/networking restart Reconfiguring network interfaces...SIOCADDRT: No such process Failed to bring up eth0. done. Code: ~# route add default gateway xxx.xxx.xxx.zzz eth0 SIOCADDRT: No such process Code: ~# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:11:43:35:A9:7E inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.yyy Mask:255.255.254.0 inet6 addr: fe80::211:43ff:fe35:a97e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:54553 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3661198 (3.4 MiB) TX bytes:620 (620.0 b) Base address:0xecc0 Memory:dfae0000-dfb00000 (note that the mask is correct) Code: ~# cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback #used for cluster under ldirectord auto lo:0 iface lo:0 inet static address xxx.xxx.xxx.uuu netmask 255.255.254.0 pre-up sysctl -p > /dev/null # The primary network interface auto eth0 iface eth0 inet static address xxx.xxx.xxx.xxx netmask 255.255.254.0 broadcast xxx.xxx.xxx.yyy gateway xxx.xxx.xxx.zzz auto eth1 iface eth1 inet static address 10.0.200.104 netmask 255.255.255.0 broadcast 10.0.200.255 Code: ~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.200.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 xxx.xxx.xxx.0 0.0.0.0 255.255.254.0 U 0 0 0 eth0 The internet is on eth0 and eth1 is a local network with no internet access. I'm using heartbeat and ldirectord, it has never worked because of this network error. So what you suggest to me ? Many thanks for your help ! (sorry for my english, that's not the best