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Re: [Qemu-devel] Networking on Win2K host

From: Mike Tremoulet
Subject: Re: [Qemu-devel] Networking on Win2K host
Date: Mon, 9 Aug 2004 12:20:29 -0500

Renzo --

Thanks for the tip - I'm going to throw things if I spent the weekend
sorting this out only because it doesn't forward pings... ;)

Unfortunately, resolution doesn't appear to be working now that I'm on
my work network and not at home.  Again, I don't know how to tell
which of three interfaces is used by slirp as the outbound side to the

Still working on it,
-- Mike

On Mon, 9 Aug 2004 17:38:33 +0200, Renzo Davoli <address@hidden> wrote:
> On Mon, Aug 09, 2004 at 09:54:09AM -0500, Mike Tremoulet wrote:
> > Qemu itself seems to run quite well and quite fast.  The only hurdle I
> > have left is networking.  I have three interfaces on my Win2K host -
> > an integrated Ethernet NIC, a wireless NIC, and OpenVPN 2.0beta2
> > TAP-Win32 (installed in the process of trying everything).  When I
> > boot in Qemu, I get an IP address of 10.*.*.* assigned.  This
> > corresponds to nothing on my network.  I can resolve domain names, but
> > I cannot apparently send or receive traffic. If I execute "ping
> > google.com", the ping command comes back with an IP address for
> > google.com but no packets received.
> > 
> The IP address is the default address for the slirp (user-net)
> support integrated inside qemu.
> slirp does not need any configuration nor external tools.
> It does *not* forward ping (ICMP) packets but it works with TCP
> connections as it were a NAT (masquerading) router.
> So if the guest os gets the address, it is able to resolve names, it is able
> to ping (the default route) everything should be okay.
> If it resolves google.com but you cannot ping it... it is the standard
> behavior.
> Cross your fingers and Start your browser.
> renzo
> P.s. I have my experience on qemu for linux, but for user-net netowrking
> should behave in the same way.
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