Re: [Xen-devel] veth0 problems and network-route

[wei huang <huanwei@xxxxxxxxxxxxxxxxxx>]

Hi,

Many thanks to your reply. But there has to be something else different
with xen-2.0. I didn't compile the loopback as you suggested. Now
it's close to work until the DomU boots.

The strange thing is that domU and dom0 both can talk to the whole world
but they can NOT talk to each other. They can even ping each other but
cannot ssh. (I use the same disk image as I use for xen-2.0 so I don't
think there is some forwarding policy problem, etc. And actually I turned
off all the firewall, security things)

Here is the route table of dom0 after domU boots:
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
9.2.72.0        0.0.0.0         255.255.255.128 U         0 0       0  xen-br0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0       0  xen-br0
0.0.0.0         9.2.72.1        0.0.0.0         UG        0 0       0  xen-br0

And ifconfig of dom0:
eth0      Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
          inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
xen-br0   Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
          inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128

ifconfig of domU:
eth0      Link encap:Ethernet  HWaddr AA:00:00:00:00:1ame:0
          inet addr:9.2.72.101  Bcast:9.2.72.127  Mask:255.255.255.128
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.X packets:18 errors:0 dropped:0

It's almost working but it seems that something is preventing those two OS
on the same machine talking to each other.

Do you have any ideas? Thank you very much!

Regards,
Wei Huang

> On 29 Jul 2005, at 18:49, wei huang wrote:
>
> > Do you have any back port patch to the version vnet which doesn't use
> > veth0? It might help in my case. PS: I need to run program with some
> > new
> > features in unstable, so I have to stick to the unstable versoin.
>
> I think you can remove loopback.o from
> linux/drivers/xen/netback/Makefile, and that will give you old-style
> behaviour.
>
>   -- Keir
>
>
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>


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