# dmesg | grep eth eth0: RealTek RTL8139 at 0xd800, 00:40:f4:d8:41:a4, IRQ 12 eth0: Identified 8139 chip type 'RTL-8100B/8139D' eth1: RealTek RTL8139 at 0xdc00, 00:40:f4:d8:41:a3, IRQ 10 eth1: Identified 8139 chip type 'RTL-8100B/8139D' eth2: RealTek RTL8139 at 0xe000, 00:40:f4:d8:41:a2, IRQ 11 eth2: Identified 8139 chip type 'RTL-8100B/8139D' At that point, eth0 works properly but: # ifconfig eth1 up eth1: ERROR while getting interface flags: No such device # ifconfig eth2 up eth2: ERROR while getting interface flags: No such device # cat /etc/network/interfaces | grep -v "#" auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.1.201 gateway 192.168.1.1 netmask 255.255.255.0 auto eth1 iface eth1 inet dhcp auto eth2 iface eth2 inet static address 192.168.103.1 netmask 255.255.255.0 # ip a 1: lo: mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 5: sit0: mtu 1480 qdisc noop link/sit 0.0.0.0 brd 0.0.0.0 6: eth0: mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:40:f4:d8:41:a4 brd ff:ff:ff:ff:ff:ff inet 192.168.1.201/24 brd 192.168.1.255 scope global eth0 inet6 fe80::240:f4ff:fed8:41a4/64 scope link valid_lft forever preferred_lft forever 7: eth3: mtu 1500 qdisc noop qlen 1000 link/ether 00:40:f4:d8:41:a3 brd ff:ff:ff:ff:ff:ff 8: eth4: mtu 1500 qdisc noop qlen 1000 link/ether 00:40:f4:d8:41:a2 brd ff:ff:ff:ff:ff:ff