Both eth0 and eth1 are connected to the same switch, and both got an ip address from id with dhcp IF I CONNECT ONLY INE CABLE TO eth0 me@ws:~$ ssh -XC root@192.168.5.65 No route to host me@ws:~$ ssh -XC root@192.168.5.110 No route to host IF I CONNECT ONLY INE CABLE TO eth1 me@ws:~$ ssh -XC root@192.168.5.65 Password: me@ws:~$ ssh -XC root@192.168.5.110 Password: server:~# ip route list 192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.65 192.168.5.0/24 dev eth1 proto kernel scope link src 192.168.5.110 default via 192.168.5.254 dev eth0 server:~# server:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:08:54:45:A0:D4 inet addr:192.168.5.65 Bcast:192.168.5.255 Mask:255.255.255.0 inet6 addr: fe80::208:54ff:fe45:a0d4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:739 errors:0 dropped:0 overruns:0 frame:0 TX packets:335 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:60485 (59.0 KiB) TX bytes:39680 (38.7 KiB) Interrupt:177 Base address:0xec00 eth1 Link encap:Ethernet HWaddr 00:B0:D0:E1:63:4A inet addr:192.168.5.110 Bcast:192.168.5.255 Mask:255.255.255.0 inet6 addr: fe80::2b0:d0ff:fee1:634a/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:589 errors:0 dropped:0 overruns:0 frame:0 TX packets:9 errors:7 dropped:0 overruns:0 carrier:7 collisions:0 txqueuelen:1000 RX bytes:40258 (39.3 KiB) TX bytes:1746 (1.7 KiB) 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:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) server:~# server:~# netstat -a Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 localhost.localdom:smtp *:* LISTEN tcp6 0 0 *:ssh *:* LISTEN tcp6 0 0 ::ffff:192.168.5.65:ssh ::ffff:192.168.5.:33283 ESTABLISHED udp 0 0 *:bootpc *:* udp 0 0 *:bootpc *:* Active UNIX domain sockets (servers and established) Proto RefCnt Flags Type State I-Node Path unix 5 [ ] DGRAM 3415 /dev/log unix 2 [ ] DGRAM 3964 unix 2 [ ] DGRAM 3927 unix 2 [ ] DGRAM 3427 server:~# server:~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 0.0.0.0 192.168.5.254 0.0.0.0 UG 0 0 0 eth0 server:~#