Change the Loopback address in Linux

Hi,
Please can you tell me how to change the Loopback address in Linux.

I wanted to change the loopback address and give a new IP address to my machine this is because I'm running Oracle10g on Linux in a virtual machine,I wanted to install Oracle 11g in another machine and enable communication between these machines please advice.

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    lizardsystems.com/wiki/change_mac_address/faq/change_mac_address_in_windows_7
    blog.technitium.com/2011/05/tmac-issue-with-wireless-network.html
    superuser.com/questions/519189/how-to-change-the-mac-address-in-win-8-to-spoof-a-roku-player-through-a-wifi-spl
    social.technet.microsoft.com/Forums/windows/en-US/59e07df3-471c-499e-ad5f-e7cb507595df/cannot-change-mac-address-in-windows-7-driver-has-option-doesnt-work-neither-does-regedit-ms?forum=w7itpronetworking
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    Hi,
    For changing the MAC address for Windows 7 is designed with some limitation, we cannot get over it. Thanks for your understanding.
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    “Y” can be 2, 6, A or E.
    So the possible MAC addresses in Windows 7 for wireless adapters:
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    X6-XX-XX-XX-XX-XX
    XA-XX-XX-XX-XX-XX
    XE-XX-XX-XX-XX-XX
    For the wifi hotspot issue, please check this blog to see if it can be helpful.
    Windows 7 Connectivity Problems in Public Hotspots
    http://blogs.technet.com/b/patrickr/archive/2010/07/28/windows-7-connectivity-problems-in-public-hotspots.aspx
    Kate Li
    TechNet Community Support

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