Re: [Xen-users] xen3 with bind in domU - SOLVED

["Leonardo Pinto" <listas@xxxxxxxxxxxxxxxx>]

I had this exactly problem with mine bind, only that the circumstance was a
little different. He only gave error in bind, in the second consecutive query
to second IP alias... ... ...
The question is: Disconnect checksum of the UDP, we will not be weakening the
security in the traffic of the packages?
What it could cause using this command (ethtool -K eth0 tx off)?

--
Leonardo Pinto
listas#openlogic dot com br


On Tue, 14 Mar 2006 20:03:28 +0100, Daniel Bauer wrote
> From: "Tom Eastep" <teastep@xxxxxxxxxxxxx>
> > On Tuesday 14 March 2006 09:28, Daniel Bauer wrote:
> >> I've got a runnig xen host with "nothing" inside dom0 and some domU
> >>
> >> 1. domU: firewall and router (external and internal interface)
> >> 2. domU: webserver with bind (internal interface)
> >> 3. domU: mailserver (internal interface)
> >>
> >> if I start a query at the domU bind from the inside of the network it
> >> works,
> >> if I start the same query from the outside of the network then it
> >> fails.
> >> I'm sure that the firewall allowed this query, I'm using the same
> >> iptables rules which worked on the 3 differnt real boxes.
> >>
> >> Does anybody knows this problem?
> >
> > I had problems with bind in domU until I arranged for the following to
> > be
> > executed in the domU when interface 'eth0' was brought up:
> >
> > ethtool -K eth0 tx off
> >
> > Before I applied that change, tcpdump showed that UDP packets from the
> > domU
> > had invalid checksums.
> 
> Great this solved my problem, lot of thanks
> Daniel


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