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 RE: [Xen-users] 8th DomU can ping bridge but not internet
 
To: "Peter Braun" <xenware@xxxxxxxxx>,	"Xen users mailing list" <xen-users@xxxxxxxxxxxxxxxxxxx>From: "Stephan Seitz" <s.seitz@xxxxxxxxxxxx>Date: Sun, 27 May 2007 15:48:41 +0200Delivery-date: Sun, 27 May 2007 06:46:44 -0700List-id: Xen user discussion <xen-users.lists.xensource.com>Thread-index: AcegQSimtbGh9Q/7QFK4/o5wHTPg5wAJJOdTThread-topic: [Xen-users] 8th DomU can ping bridge but not internet 
 Hi,
 without deeper investigation into this behaviour, i would
 assume that you run out of your device namespace after the
 7th. domU.
 
 
 
 
 
 Stephan Seitz
 
 
 
 
 -----Original Message-----
 From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx on behalf of Peter Braun
 Sent: Sun 27.05.2007 11:24
 To: Xen users mailing list
 Subject: Re: [Xen-users] 8th DomU can ping bridge but not internet
 
 New idea:
 
 When bridged networking - is there need for functional IPTables? In
 other words - to have working bridgeing do I have to have working
 iptables in dom0?
 
 iptables -L
 FATAL: Module ip_tables not found.
 iptables v1.3.5: can't initialize iptables table `filter': iptables
 who? (do you need to insmod?)
 Perhaps iptables or your kernel needs to be upgraded.
 
 
 Peter
 
 2007/5/27, Peter Braun <xenware@xxxxxxxxx>:
 > 2007/5/27, Igor Chubin <igor@xxxxxxx>:
 > > On Sa, Mai 26, 2007 at 03:42:23 +0200, Peter Braun wrote:
 > > > Hi,
 > > >
 > > > there is gentoo based dom0 with Xen 3.0.4-p1 and some PV guests with
 > > > various linux distros.
 > > >
 > > > We are using bridged networking with one eth0.
 > > >
 > > > We have 15 IP adresses with netmask 255.255.255.0.
 > > > All IPs are using same gateway.
 > > >
 > > > Up to now we were adding domU based on our needs w/o problems.
 > > >
 > > > Yesterday we wanted to add new Debian based domU but its networking
 > > > doesnt work properly.
 > > >
 > > > This 8th domU comes up ... than we realized that its not possible to
 > > > ping/ssh 8th from outside world. Ping/ssh from dom0 to 8th domU works.
 > > > On the other side ping/ssh to other domUs and dom0.
 > > >
 > >
 > > Hello, Peter!
 > >
 > > I have faced similar problem.
 > >
 > > Try to change MAC-address in 8th domU.
 > > That solved the problem for me.
 > >
 > > --
 >
 > Hi,
 >
 > am specyfiing MAC for every DomU. So based on your recommendation I
 > changed vif for 8th DomU to vif=[ 'ip=x.x.x.x' ] only - without
 > specifying MAC - situation hasnt changed.
 >
 > Still not able to create new domU with internet access.
 >
 > Any other idea?
 >
 > Peter
 >
 
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