--- Christopher Marshall <[EMAIL PROTECTED]> wrote:

>   The simplest way to do that (have a host act like a router between guests)
> would be to use ethertap devices.  Each guest would talk to to the host
> through a different tap device and the guests would each use eth0 on their
> side.

What about PPPoE? Same star topology restriction though. Is it possible to
allow the guests to communicate TAP-to-TAP (guest-to-guest)? If this was
possible then PPPoE could establish particular pipes.

If IP via the host is used as the fabric, then you might want to consider
running GRE or IPSec tunnels guest-to-guest which would give you the ability to
set up pretty much any point-to-point topology. The devices would be tun
devices instead of ppp so they would carry IP packets instead of PPP packets.



      
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