root@HP-PC:~# ifconfig eth0 up
root@HP-PC:~# dhclient
root@HP-PC:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 28:92:4a:57:e0:63  
          inet6 addr: fe80::2a92:4aff:fe57:e063/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1551 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:102098 (99.7 KiB)  TX bytes:1296 (1.2 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:65536  Metric:1
          RX packets:10817 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10817 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:855076 (835.0 KiB)  TX bytes:855076 (835.0 KiB)

root@HP-PC:~# apt-get install network-manager-KDE
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  accountsservice apg baobab brasero-common caribou caribou-antler cdrdao
  cheese-common cups-pk-helper dconf-tools empathy-common evince-common
  evolution-data-server-common folks-common fonts-cantarell gcalctool
  gir1.2-accountsservice-1.0 gir1.2-atspi-2.0 gir1.2-caribou-1.0
  gir1.2-clutter-1.0 gir1.2-clutter-gst-1.0 gir1.2-cogl-1.0
  gir1.2-coglpango-1.0 gir1.2-evince-3.0 gir1.2-folks-0.6 gir1.2-gck-1
  gir1.2-gconf-2.0 gir1.2-gcr-3 gir1.2-gdesktopenums-3.0 gir1.2-gee-1.0
  gir1.2-gst-plugins-base-0.10 gir1.2-gstreamer-0.10 gir1.2-gtk-2.0
  gir1.2-gtkclutter-1.0 gir1.2-gtksource-3.0 gir1.2-gtop-2.0
  gir1.2-javascriptcoregtk-1.0 gir1.2-json-1.0 gir1.2-mutter-3.0
  gir1.2-networkmanager-1.0 gir1.2-panelapplet-4.0 gir1.2-polkit-1.0
  gir1.2-telepathyglib-0.12 gir1.2-telepathylogger-0.2 gir1.2-upowerglib-1.0
  gir1.2-wnck-3.0 gir1.2-xkl-1.0 gjs gstreamer0.10-gconf gstreamer0.10-nice
  gstreamer0.10-plugins-ugly gstreamer0.10-x gtk2-engines gucharmap hwdata
  ia32-libs lib32asound2 lib32z1 libaccountsservice0 libapache2-mod-dnssd
  libatk-adaptor libatk-adaptor-data libatk-bridge2.0-0 libatk1.0-dev
  libatspi1.0-0 libavahi-glib1 libavahi-gobject0 libavahi-ui-gtk3-0
  libbonobo2-0 libbonobo2-common libbrlapi0.5 libburn4
  libcairo-script-interpreter2 libcairo2-dev libcamel-1.2-33 libcaribou-common
  libcaribou-gtk-module libcaribou-gtk3-module libcaribou0 libclutter-1.0-0
  libclutter-1.0-common libclutter-gst-1.0-0 libclutter-gtk-1.0-0
  libclutter-imcontext-0.1-0 libclutter-imcontext-0.1-bin
  libcluttergesture-0.0.2-0 libcogl-common libcogl-pango0 libcogl9
  libcolorblind0 libcpufreq0 libdv4 libebackend-1.2-2 libebook-1.2-13
  libecal-1.2-11 libedata-cal-1.2-15 libedataserver-1.2-16 libevdocument3-4
  libevview3-3 libexempi3 libexpat1-dev libfolks-telepathy25 libfolks25
  libfontconfig1-dev libfreetype6-dev libgail-common libgdata-common
  libgdict-1.0-6 libgdict-common libgdk-pixbuf2.0-dev libgee2 libgeocode-glib0
  libgjs0b libglib2.0-dev libgmime-2.6-0 libgoa-1.0-common libgsf-1-114
  libgsf-1-common libgssdp-1.0-3 libgtk2.0-dev libgtkmm-3.0-1
  libgtksourceview-3.0-0 libgtksourceview-3.0-common libgucharmap-2-90-7
  libgupnp-1.0-4 libgupnp-igd-1.0-4 libgweather-common libgxps2 libidl0
  libiec61883-0 libiptcdata0 libisofs6 libjavascriptcoregtk-1.0-dev
  libjson-glib-1.0-0 libjte1 liblouis-data liblouis2 libmetacity-private0a
  libmission-control-plugins0 libmusicbrainz5-0 libmutter0 libmx-1.0-2
  libmx-bin libmx-common libnautilus-extension1a libnice10 libnm-gtk-common
  liboauth0 liborbit2 libpanel-applet-4-0 libpango1.0-dev libpcre3-dev
  libpcrecpp0 libpeas-common libpixman-1-dev libpng12-dev libpoppler-glib8
  libquvi-scripts libquvi7 libsidplay1 libsocialweb-client2
  libsocialweb-common libt1-5 libtelepathy-glib0 libtelepathy-logger2
  libtracker-extract-0.14-0 libtracker-miner-0.14-0 libtracker-sparql-0.14-0
  libunique-3.0-0 libwacom-common libwacom2 libwnck-3-0 libwnck-3-common
  libxcb-render0-dev libxcb-shm0-dev libxcomposite-dev libxcursor-dev
  libxdamage-dev libxext-dev libxfixes-dev libxft-dev libxi-dev
  libxinerama-dev libxklavier16 libxrandr-dev libxrender-dev libxres1
  libzephyr4 metacity-common mousetweaks mutter-common nautilus-data
  obex-data-server obexd-client pidgin-data python-brlapi python-louis
  python-pyatspi python-pyatspi2 python-speechd sound-theme-freedesktop
  telepathy-gabble telepathy-logger telepathy-salut tracker tracker-utils
  x11proto-composite-dev x11proto-damage-dev x11proto-fixes-dev
  x11proto-randr-dev x11proto-render-dev x11proto-xext-dev
  x11proto-xinerama-dev xbrlapi zenity zenity-common
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  network-manager plasma-widget-networkmanagement
Suggested packages:
  avahi-autoipd kdebase-workspace-bin
The following NEW packages will be installed:
  network-manager network-manager-kde plasma-widget-networkmanagement
0 upgraded, 3 newly installed, 0 to remove and 19 not upgraded.
Need to get 875 kB/3,204 kB of archives.
After this operation, 11.5 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
Err http://http.kali.org/kali/ kali/main network-manager amd64 0.9.4.0-10
  Could not resolve 'http.kali.org'
Err http://http.kali.org/kali/ kali/main network-manager-kde amd64 1:0.9.0.3-1
  Could not resolve 'http.kali.org'
Failed to fetch http://http.kali.org/kali/pool/main/n/network-manager/network-manager_0.9.4.0-10_amd64.deb  Could not resolve 'http.kali.org'
Failed to fetch http://http.kali.org/kali/pool/main/n/networkmanagement/network-manager-kde_0.9.0.3-1_amd64.deb  Could not resolve 'http.kali.org'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?