[TriLUG] Xen networking

Michael Hrivnak mhrivnak at hrivnak.org
Wed Jul 19 14:47:10 EDT 2006

I laughed out loud when I read the subject, because I knew what was coming and 
have been there myself.  Grab a beer and read through this:


Good luck,

On Wednesday 19 July 2006 12:13 pm, Brian McCullough wrote:
> OK, I have got to the point where I seem to be able to create and run
> domU children in my Xen machine.  ( By the way, when I run Xentop, it
> says that all of the domUs are "blocked" -- is this normal, or should
> they be running? )
> However, I am confused by the networking.  The dom0 comes up with
> several ( quite a few ) items in ifconfig, and eth0 is shown with the
> "old" IP address. ( Incidentally, "network-bridge" and "vif-bridge" and
> other configuration is left to default settings. )
> No other device except lo has an IP address -- is this correct?
> Inside the domU, only eth0 and lo show, and both have "real" IP
> addresses.
> I can ping and traceroute out and into the domU.
> I can SSH out and into the domU.
> I can not get into the domU with any of ports 53, 80 and 443, although I
> can get out with any of them.
> I have tried setting and clearning iptables configurations in both the
> dom0 and domU, with no change in behaviour.
> Suggestions -- even places to look?  I have been looking at the Xen
> documentation and Wiki, and seem to have configured everything the way
> that the documentation says to, but don't seem to be getting it, yet.
> Thanks,
> Brian

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