[poky] QEMU networking

[Gary Thomas]

On 05/12/2011 10:10 AM, Gary Thomas wrote:
> I'm having a devil of a time getting networking to work when
> I run qemu (a Poky derived image, of course!) I'm running this
> on a box which itself is NAT'd to the real internet, like this:
>
> +-------------+ +------------------+
> | QEMUarm |<------>| My_Desktop |<----> Internet
> | 192.168.7.2 | | 192.168.7.1 |
> +-------------+ | 192.168.1.125 |
> +------------------+
>
> Firstly, something is messing with the routing tables over time
> and I can't get past the first hop. If I reconfigure the network
> on the QEMU system like this:
> # ifconfig eth0 down
> # ifconfig eth0 up
> # route add default gw 192.168.7.1
> I can then access past "My_Desktop", e.g.
> # ping 192.168.1.101
> -or-
> # ping 74.125.225.19 (www.google.com)
> This works fine and the routing table (route.good) is correct.
>
> A little while later (minutes), the routing changes and now I can't
> get past 'My_Desktop' (i.e. I can ping 192.168.1.125, but not 192.168.1.101)
> The routing table has changed (route.bad)

Actually, I can only ping 192.168.7.1 - nothing outside of that subnet works.

>
> What causes this? I don't have avahi running anywhere and I've explicitly
> disabled that daemon on the QEMU system.
>
> Finally, there seems to be no name resolution - /etc/resolv.conf comes
> up as:
> nameserver 127.0.0.1
> If I want to resolve any real names, I have to update it manually.
>
> Note: I'm running core-image-sato with web-webkit added using zypper.
>
> Are others actually using the network with QEMU images? like this?
>
>
>
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> poky at yoctoproject.org
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-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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