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Re: [Xen-users] strange routing problem


  • To: "Peter Fokkinga" <peter@xxxxxxxxxxx>
  • From: "Anand Gupta" <xen.mails@xxxxxxxxx>
  • Date: Mon, 10 Apr 2006 17:25:07 +0530
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 10 Apr 2006 04:55:47 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi!

On 4/10/06, Peter Fokkinga <peter@xxxxxxxxxxx> wrote:
Quoting Anand Gupta <xen.mails@xxxxxxxxx>:
> I am using vif-route setup in xen 3.0.2.
>
>> From dom0 -> domU works
> DomU can communicate to the outside world.
> However outside world to DomU doesn't work.
>
> Any ideas ?
>
Checksum problems? It's still not entirely fixed in 3.0.2 :-(
Try `ethtool -K eth0 tx off` in the domU.

"To see if you've really got the checksum problem use
tcpdump -vv in the domain not receiving data. For example:
`tcpdump -vv -n -i eth0`" (from Florian Kirstein, this was
the first step in solving my own routing problems).

I am not sure what exactly checksum problem is. I am not able to understand your solution though. I will explain again with my setup. I am replacing my static ips with 192.168.1.1. I have live ips from 192.168.1.1 -> 192.168.1.5

base dom0 - > 192.168.1.1

domU -> 192.168.1.2

ping from 192.168.1.1 -> 192.168.1.2 works

ping from 192.168.1.2 -> anywhere on the internet works

ping from anywhere to 192.168.1.2 doesn't work :(

Thanks for the help.

Edit: I got it working. It was an arp problem. I just recalled that i edited the vif-route from 3.x onwards to make it work for my setup.

--
regards,

Anand Gupta
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