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[Qemu-devel] Re: Qemu port on Windows to support tun/tap

From: Ming-Ching Tiew
Subject: [Qemu-devel] Re: Qemu port on Windows to support tun/tap
Date: Thu, 30 Dec 2004 21:50:06 +0800

>> 1. If I start up second instance of guest OS, it will not join the
>> network. Looks like
>>    somewhere there is a limitation on single open.
>> 2. And I can't have multiple network cards within one guest OS using the
>>    tap devices.
>> Anyway, I view this as the current limitation of the software. Until
>> changes made to improving it, I will have to live with this limitation.
> When you try to use multiple instances of qemu on tun/tap network, you must
>make sure that each virtual machine gets its own MAC address.
>qemu -macaddr 52:54:00:12:34:56 ....
>qemu -macaddr 52:54:00:12:34:57 ....
>Here 52:54:00 is Realtek and 12:34:56 is what you can change.
I did that when I performed the testing, because I found all these
things to be working perfectly on Linux host. I am just not able
to get it working with windows port combined with tap-win32 driver.

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