vmware – moving a network address

Every time you reinstall vmware it seems to recreate your network interfaces, and at the same time reassigns the ip addresses that you had set up. If you want to move them then you need to edit a file and a couple of registry entries.
The first file is %APPDATA%\VMware\vmnetdhcp.conf. On XP it’s normally C:\Documents and Settings\All Users\Application Data, Under Vista that’s C:\ProgramData. Note, however that when UAC is enabled, this folder experiences redirection on write by unprivileged users, so editing this file as an ordinary user will have no effect, so make sure that you use a privileged editor when altering this file.
The content you want to change are the Subnet and Range entries to match your original subnet entries you had. You can also put in entries for the domain-name and router. When you add this information it gives you the ability to mark a the subnet as identified under Vista, so you can be in an identified network, and thus be discoverable. Please note that doing this and then putting an insecure OS on the client vm is your own fault.
The other entries that need to be altered are in the registry. The first one is HKLM\Software\VMware, Inc.\VMnetLib\VMnetConfig\vmnet? entries – the IPSubnetAddress entry needs to be changed to match the entries that you set in the .conf file. The next one is a little bit tricky – it’s HKLM\SYSTEM\CurrentControlSet\Services\VMnetDHCP\Parameters\VirtualEthernetSegments\?, the value is HostIpAddress – and it needs to be mapped. The value is a endian-reversed representation of your address so if your ip address is the value would be 0x0116A8C0, C0==192, a8==168, 16=22, 01=01. Use Calc to get the values that you should put in there.
Restart the service “vmware dhcp service”, and then you should be OK.

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