root@anni:/home/anni# ifconfig -a ; iwconfig
eth0      Link encap:Ethernet  HWaddr 00:90:f5:98:84:c3
          inet addr:192.168.2.104  Bcast:192.168.2.127  Mask:255.255.255.128
          inet6 addr: fe80::290:f5ff:fe98:84c3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7947 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4564 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:11289242 (10.7 MiB)  TX bytes:370494 (361.8 KiB)
          Interrupt:29

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:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:560 (560.0 B)  TX bytes:560 (560.0 B)

pan0      Link encap:Ethernet  HWaddr 42:14:66:9d:bc:37
          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:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        no wireless extensions.

eth0      no wireless extensions.

pan0      no wireless extensions.

root@anni:/home/anni# cat /etc/network/interfaces
# 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

# The primary network interface
allow-hotplug eth0
#NetworkManager#iface eth0 inet dhcp
root@anni:/home/anni# lspci -nn| grep -A2 -i network
0f:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller [10ec:8172] (rev 10)
15:00.0 System peripheral [0880]: JMicron Technology Corp. SD/MMC Host Controller [197b:2382] (rev 80)
15:00.2 SD Host controller [0805]: JMicron Technology Corp. Standard SD Host Controller [197b:2381] (rev 80)