/0/100/1e/8 eth0 network 82801BA/BAM/CA/CAM Ethernet Controller
eth0 Link encap:Ethernet HWaddr 00:02:55:61:02:dc
inet addr:192.168.100.10 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::202:55ff:fe61:2dc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2280 errors:0 dropped:0 overruns:0 frame:0
TX packets:1705 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:189261 (184.8 KiB) TX bytes:214102 (209.0 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:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2136 (2.0 KiB) TX bytes:2136 (2.0 KiB)
#ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:02:55:61:02:dc
inet addr:192.168.100.10 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::202:55ff:fe61:2dc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2334 errors:0 dropped:0 overruns:0 frame:0
TX packets:1752 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:193271 (188.7 KiB) TX bytes:220132 (214.9 KiB)
eth1 Link encap:Ethernet HWaddr ff:ff:ff:ff:ff:ff
BROADCAST MULTICAST MTU:1500 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:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:21 Base address:0x7800
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:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2136 (2.0 KiB) TX bytes:2136 (2.0 KiB)
rename4 Link encap:Ethernet HWaddr 00:d0:b7:19:c0:a7
BROADCAST MULTICAST MTU:1500 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:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
el archivo interfaces esta de la siguiente forma
# 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
# primer interface red
auto eth0
iface eth0 inet static
address 192.168.100.10
netmask 255.255.255.0