WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

[Xen-users] Xen 3.1 networking questions

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen 3.1 networking questions
From: Florian Engelmann <mailinglists@xxxxxxxx>
Date: Thu, 15 Nov 2007 08:05:39 +0100
Delivery-date: Wed, 14 Nov 2007 23:06:35 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Thunderbird 2.0.0.6 (Windows/20070728)
Hi,
after hours of testing my last hope is the mailinglist. I have got a root server (www.1und1.com) and I just installed debian etch amd64 on it. I maanged to compile xen 3.1 from source and also my 1st HVM virtual guest is running fine (Windows 2003). But 1und1 uses a absolut strange network setup I have never seen before and I do not understand why it is working at all!?! These are the settings the root Sever is getting with DHCP (and they are working...):

ifconfig:
eth0      Link encap:Ethernet  HWaddr 00:19:99:0D:CD:05
inet addr:87.106.189.xxx Bcast:87.106.189.203 Mask:255.255.255.255
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:15579 errors:0 dropped:0 overruns:0 frame:0
         TX packets:15257 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:1026640 (1002.5 KiB)  TX bytes:5709824 (5.4 MiB)
         Interrupt:16 Base address:0x6000

route -n:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.255.255.1    0.0.0.0         255.255.255.255 UH    0      0        0 eth0
10.0.0.0        0.0.0.0         255.0.0.0       U     0      0        0 eth0
0.0.0.0         10.255.255.1    0.0.0.0         UG    0      0        0 eth0

the route is also set with dhcp but after updating from sarge to etch i had to use a trick to set the route because dhcp3 did no more use the modified (by 1und1) dhcp script.

So this is my /etc/network/interfaces:
auto lo eth0
iface lo inet loopback

iface eth0 inet dhcp
      up ip route add 10.255.255.1/32 dev eth0
      up ip route add default via 10.255.255.1

auto eth0:0
iface eth0:0 inet static
      address 87.106.189.xxx
      netmask 255.255.255.255
      broadcast 87.106.189.xxx

# xxx = always the same number (yes ip and broadcast are equal...)

I am abolute no network specialist but I never thought a netmask of 255.255.255.255 is valid and a client can communicate without a reachable gateway... but it works...

I installed my 1st HVM guest and tried to setup networking. Bridging does not work because windows does not allow those strange network settings, so I think NAT would be the solution, wouldn't it? But I did not find any documentation about how to setup NAT with Xen 3.1.
What IP do I have to setup at my dom0?
Can I use eth0:x to set it up?
Do I have to add any IP settings to my guest config:
vif = [ 'type=ioemu, bridge=xenbr0' ] ?
Should I use DHCP on the private LAN or static IPs?
Can I use a 192.168.x.x network or do I have to use 10.x.x.x (I red about it)?
Do you have any good links about NAT and Xen 3.1?

Many thanks for your help!
Greetings Florian

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users