Re: [xen-users] networking problems

["David Brown" <dmlb2000@xxxxxxxxx>]

On 11/29/06, David Brown <dmlb2000@xxxxxxxxx> wrote:
> I can't seem to connect to the internet when I start xend. I'm not the
> greatest networking guru so I'm probably doing something wrong. I have
> a very simple setup rhel4 one nic and the nic has to use dhcp so mac
> filtering will work.
>
> I've read the XenNetworking page on the wiki but am still not quite
> getting things.
> Since I have to have the right mac to get to the outside world, I need
> to change one of the internal devices to that mac as well? which one?
> peth0? should I change the eth0 mac to something different since
> having two with the same mac would cause problems?
>
> I'm kinda at a loss, since my networking skills aren't that good. Any
> help would be appreciated.
Okay found out more stuff, apparently had the wrong ethernet device up
and it was using that, peth0 instead of eth0, so after turning off the
peth0 and trying dhclient on eth0 it wouldn't go.  However, using
tcpdump on eth0 and peth0 are showing traffic, so I turned off the
firewall and that fixed the problem I am now able to dhcp eth0 and
ping the outside world using dns on dom0.  I really would like to have
the firewall running but that stops dhcp on the internal devices.

An iptables rule to allow dhcp through would be nice, I'm not sure how
to write it.

- David Brown

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