title: opkg failed to install ipk package
body: <p>I have created an image with buildroot for raspberry pi 2 and i have included "Opkg" in it. I then manually downloaded "gcc_4.8.3-1_brcm2708.ipk" for it and moved this file into the SD card and logged in to the pi, but now when i run the command "opkg install gcc_4.8.3-1_brcm2708.ipk" , i get the following error:</p>
  
  <pre><code> * open_outer: Failed to open package 'gcc_4.8.3-1_brcm2708.ipk': Unrecognized archive format
   * pkg_extract_control_file_to_stream: Failed to extract control.tar.gz from package 'gcc_4.8.3.
   * pkg_init_from_file: Failed to extract control file from gcc_4.8.3-1_brcm2708.ipk.
  </code></pre>
  
  <p>Is there a problem with the package or the image or it is something else?
  Thanks in advance.</p>