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Re: [Qemu-devel] Re: [PATCH 9/9] Introduce VLANClientState::cleanup()

From: Anthony Liguori
Subject: Re: [Qemu-devel] Re: [PATCH 9/9] Introduce VLANClientState::cleanup()
Date: Thu, 30 Apr 2009 11:37:44 -0500
User-agent: Thunderbird (X11/20090320)

Avi Kivity wrote:
True, but is it actually useful?

Short-circuiting two guest devices probably isn't. Adding host devices (like recording packets) might be.

But you can do this by just inserting yourself between the frontend/backend. You can do this dynamically as long as you don't require feature negotiation. Dynamic negotiation is prohibitively difficult and one of the primary reasons we haven't been able to merge vnet support for tap yet.

The bus architecture is only useful if you want to generate and receive traffic on a vlan, not if you just want to record traffic.


Anthony Liguori

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