[vbox-dev] FW: Re: [VBox-users] Predictable PCI bus addresses for network interfaces?

[Kent R. Spillner]

Forwarding to the dev list because I never received a response on the users list. :)

-----Original Message-----
From: "Kent R. Spillner" <kspillner at acm.org>
Sent: Sunday, June 23, 2013 08:53
To: "Community mailing list of VirtualBox users" <vbox-users-community at lists.sourceforge.net>
Subject: Re: [VBox-users] Predictable PCI bus addresses for network interfaces?

Bump.

On Jun 3, 2013, at 14:57, "Kent R. Spillner" <kspillner at acm.org> wrote:

> Howdy-
> 
> Is it possible to predict PCI bus addresses for network interfaces?
> 
> Is the mapping from VirtualBox network adapter "slot" to PCI bus address stable, meaning it won't change from host to host or from guest to guest?
> 
> What variables affect the mapping of VirtualBox network adapter slot to PCI bus address?  Chipset?  Network adapter type?  The presence or absence of VirtualBox extensions?
> 
> I'm curious because Systemd v197 changed the default way network interfaces are named (see: http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/), and I'm just trying to gauge the potential impact to Linux guests.  For example, can I assume that the first network adapter will always attach to bus 0 slot 17 (0x11), the second network adapter will always attach to bus 0 slot 8 (0x08), etc?  Or are those mappings specific to guests using the PIIX3 chipset and Intel 82545EM and 82540EM adapter types?
> 
> Thanks in advance!
> 
> Best,
> Kent
> 
> 
> 
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