[Qemu-devel] win98 user mode network not working ...

[Qemu-devel] win98 user mode network not working ...

[Adrian Coman]

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Hi,

I'm a newbie with qemu and I know there have been a lot of topics on the qemu 
networking topic, but none of them solved my problem ... I hope I'll get an 
answer from you.

So, I have a CentOS 4.2 as host with qemu-0.8.0 installed from sources. As 
guest I have a win98se. In w98 I configured the network to get the IP through 
dhcp. I start qemu with: 

qemu -localtime -hda win98.img

From what I read, when there is no -net option, the default network mode is 
usermode.

The problem is that when I ping yahoo.com for example I get the IP of yahoo 
but no response from ping ..., something like: 

ping yahoo.com
Pinging yahoo.com [216.109.112.135] with 32 bytes of data:
request time out

I attached a screenshot with the output of ipconfig /all from w98.

Where did I do wrong?

Thanks,
Adrian 

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Re: [Qemu-devel] win98 user mode network not working ...

[Mike Kronenberg]

On 12.01.2006, at 13:38, Adrian Coman wrote:

> Hi,
>
> I'm a newbie with qemu and I know there have been a lot of topics  
> on the qemu
> networking topic, but none of them solved my problem ... I hope  
> I'll get an
> answer from you.
>
> So, I have a CentOS 4.2 as host with qemu-0.8.0 installed from  
> sources. As
> guest I have a win98se. In w98 I configured the network to get the  
> IP through
> dhcp. I start qemu with:
>
> qemu -localtime -hda win98.img
>
> From what I read, when there is no -net option, the default network  
> mode is
> usermode.
>
> The problem is that when I ping yahoo.com for example I get the IP  
> of yahoo
> but no response from ping ..., something like:
>
> ping yahoo.com
> Pinging yahoo.com [216.109.112.135] with 32 bytes of data:
> request time out
>
> I attached a screenshot with the output of ipconfig /all from w98.
>
> Where did I do wrong?

nothing :)
consider qemu as a firewall that is rather restrictive:
The ping command is only working to ping your gateway (10.0.2.2).
...Yahoo was resolved, so your network is up and running...

Mike

>
> Thanks,
> Adrian
> <ipconfig_qemu.jpeg>
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel

Re: [Qemu-devel] win98 user mode network not working ...

[André Braga]

On 1/12/06, Adrian Coman <adi.coman@gmail.com> wrote:
> The problem is that when I ping yahoo.com for example I get the IP of yahoo
> but no response from ping ..., something like:
> ping yahoo.com
> Pinging yahoo.com [216.109.112.135] with 32 bytes of data:
> request time out
> I attached a screenshot with the output of ipconfig /all from w98.
> Where did I do wrong?

Nothing; and actually this has been answered in a handful of FAQs
before: ICMP doesn't fully work over SLIRP. Sending ICMP packets work,
but not receiving. This is because of how SLIRP works.

If you need this functionality, please consider using tun/tap on the
host or OpenVPN from inside the guest.



--
"I decry the current tendency to seek patents on algorithms. There are
better ways to earn a living than to prevent other people from making
use of one's contributions to computer science."
Donald Knuth

Re: [Qemu-devel] win98 user mode network not working ...

[Jean-Christophe Dubois]

From http://fabrice.bellard.free.fr/qemu/qemu-doc.html#SEC23

"Note that ping is not supported reliably to the internet as it would require 
root priviledges. It means you can only ping the local router (10.0.2.2)."

So I guess this is not the right way to test your connectivity.

Regards

JC

On Thursday 12 January 2006 13:38, Adrian Coman wrote:
> Hi,
>
> I'm a newbie with qemu and I know there have been a lot of topics on the
> qemu networking topic, but none of them solved my problem ... I hope I'll
> get an answer from you.
>
> So, I have a CentOS 4.2 as host with qemu-0.8.0 installed from sources. As
> guest I have a win98se. In w98 I configured the network to get the IP
> through dhcp. I start qemu with:
>
> qemu -localtime -hda win98.img
>
> From what I read, when there is no -net option, the default network mode is
> usermode.
>
> The problem is that when I ping yahoo.com for example I get the IP of yahoo
> but no response from ping ..., something like:
>
> ping yahoo.com
> Pinging yahoo.com [216.109.112.135] with 32 bytes of data:
> request time out
>
> I attached a screenshot with the output of ipconfig /all from w98.
>
> Where did I do wrong?
>
> Thanks,
> Adrian

Re: [Qemu-devel] win98 user mode network not working ...

[Jan Marten Simons]

Adrian Coman wrote:

>The problem is that when I ping yahoo.com for example I get the IP of yahoo 
>but no response from ping ..., something like: 
>
>ping yahoo.com
>Pinging yahoo.com [216.109.112.135] with 32 bytes of data:
>request time out
>

IIrc ping (as icmp message) does not work with user-net. Try to telnet 
the webserver at port 80 to check for connectivity. DNS is working as 
the adress got resolved into its IP. Apart from the issue with ping all 
tcp/ip-based services (like browsing the net) should work from the guest 
like being behind a NAT-firewall, which allows outbound connections.