$sudo ifconfig eth1 192.168.54.65
[user@debian5:~]$ sudo ifconfig -a |less
RX bytes:378 (378.0 b) TX bytes:510 (510.0 b)
inet addr:192.168.16.5 Bcast:192.168.16.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe00:5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:131433 errors:0 dropped:0 overruns:0 frame:0
TX packets:166474 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:37199543 (35.4 MiB) TX bytes:60470359 (57.6 MiB)
eth1 Link encap:Ethernet HWaddr 00:16:3E:00:01:05
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)
eth2 Link encap:Ethernet HWaddr 00:16:3E:00:02:05
inet addr:192.168.54.62 Bcast:192.168.54.63 Mask:255.255.255.224
inet6 addr: fe80::216:3eff:fe00:205/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000