====== Endereço IP do Servidor ======
<code bash>
# ifconfig 
eth0      Link encap:Ethernet  Endereço de HW 08:00:27:9e:bf:95  
          inet end.: 10.0.2.15  Bcast:10.0.2.255  Masc:255.255.255.0
          endereço inet6: fe80::a00:27ff:fe9e:bf95/64 Escopo:Link
          UP BROADCASTRUNNING MULTICAST  MTU:1500  Métrica:1
          RX packets:10960 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5181 errors:0 dropped:0 overruns:0 carrier:0
          colisões:0 txqueuelen:1000 
          RX bytes:6275825 (5.9 MiB)  TX bytes:768705 (750.6 KiB)

eth1      Link encap:Ethernet  Endereço de HW 08:00:27:fc:3e:3a  
          inet end.: 198.51.100.1  Bcast:198.51.100.255  Masc:255.255.255.0
          endereço inet6: fe80::a00:27ff:fefc:3e3a/64 Escopo:Link
          UP BROADCASTRUNNING MULTICAST  MTU:1500  Métrica:1
          RX packets:3587 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8042 errors:0 dropped:0 overruns:0 carrier:0
          colisões:0 txqueuelen:1000 
          RX bytes:311756 (304.4 KiB)  TX bytes:6069912 (5.7 MiB)

eth2      Link encap:Ethernet  Endereço de HW 08:00:27:0d:e8:15  
          inet end.: 203.0.113.99  Bcast:203.0.113.255  Masc:255.255.255.0
          endereço inet6: fe80::a00:27ff:fe0d:e815/64 Escopo:Link
          UP BROADCASTRUNNING MULTICAST  MTU:1500  Métrica:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          colisões:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:578 (578.0 B)

lo        Link encap:Loopback Local  
          inet end.: 127.0.0.1  Masc:255.0.0.0
          endereço inet6: ::1/128 Escopo:Máquina
          UP LOOPBACKRUNNING  MTU:16436  Métrica:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          colisões:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
</code>

**Para versão a partir do Debian 8 e CentOS 7:**
<code bash>
# ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:00:27:b7:cc:af brd ff:ff:ff:ff:ff:ff
    inet 198.51.100.20/24 brd 198.51.100.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:feb7:ccaf/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:00:27:bc:fe:0e brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:febc:fe0e/64 scope link 
       valid_lft forever preferred_lft forever
</code>