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How to Find a HostID


Tweak Software licenses are keyed to the HostID of your computer. In order to generate an evaluation license, we need the correct ID for the computer you will use to test RV. The HostID is sometimes called a MAC Address, Ethernet ID, or Physical Address. This number will look something like this:



Finding the HostID of a Macintosh Running OS X

There are two easy ways to find the HostID under OS X. First, you can use the command line command "ifconfig" to print out the network configuration of your computer in a shell. The results should include a section that look something like this:


        tunnel inet  -->
        inet6 fe80::217:f2ff:feca:91a%en0 prefixlen 64 scopeid 0x4
        inet netmask 0xffffff00 broadcast
        ether 00:16:f2:ca:09:1a

The HostID for this machine is:


Or you can find the HostID in OS X System Preferences. Open Network Preferences, Show 'Built-in Ethernet' and select the 'Ethernet' tab. The 'Ethernet ID' is the correct number.


OS X Ethernet ID

 The HostID for this computer is:


Finding the HostID on a PC running Windows XP

Open a command prompt in Windows. You can do this through the start menu by selecting: Start->All Programs->Accessories->Command Prompt. Or you can open 'run' from the start menu and enter 'cmd' and then press return. Once the command prompt is open, enter the command: ipconfig /all. In the output you should find one or more lines that look like this:


Ethernet adapter Local Area Connection:
	Physical Address. . . . . . . . . :00-18-F3-4D-97-96  


The Physical address is your HostID. If you have multiple ID's any one will work, but it is preferable to choose the one associated with your network connection.

Finding the HostID on a computer running Linux

Open a shell and enter the command 'ifconfig.'  You should get output that looks something like this:


eth0      Link encap:Ethernet  HWaddr 00:E0:81:57:3F:58
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::2e0:81ff:fe57:3f58/64 Scope:Link
          RX packets:32000 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17155 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:25611654 (24.4 MiB)  TX bytes:1254023 (1.1 MiB)

In this case the HostID is: