http://ubuntuforums.org – Wasn´t sure if here or the Server forum was the best place for this query. I recently installed Ubuntu Server 9.10 with the intent of using it as a platform for running a couple of Windows XP virtual machines along with Linux/Ubuntu. I had no problems getting the server installed. Had no problems getting the network up and running so that I had access to both my internal network as well as external connectivity to the internet. Had no problems getting a VM installed and putting Windows XP inside of it. Had no problems setting up a bridge between the WinXP virtual machine and the physical ethernet card (eth0). What I´m having trouble with is figuring out how to bridge from multiple VM´s AND Ubuntu natively through one physical ethernet card. When I set up the bridge, it knocks out the static IP address of the ethernet card that was set up initially with Ubuntu when first installed before the VM was created and installed. Therefore, connectivity within Ubuntu natively is lost. Similarly, am having trouble figuring out how the second VM (also going to be running WinXP) is going to get its connectivity since it doesn´t seem to like me setting up 2 bridges to the same physical ethernet interface card. I need all 3 ¨machines¨ to have static IP addresses and be visible/accessible from the external network for either web/mail/dns/etc servers on the Ubuntu side and for remote PC control functionality on the VM side. Any thoughts would be appreciated. I have tried setting up ¨alias¨ ethernet interfaces (eth0:1, eth0:2, eth0:3) with static addresses which work fine from native Ubuntu in presenting multiple IP addressees, but it seems that I´m not permitted to bridge to these ¨alias¨ interfaces. (HowTos)
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