Xen and multiple domains using ping at the same time

I have now a few Xen domains set up and it seems that I cannot use the command ping at the same time in two domains.

Domain 1: Vista 64bit
ping NOVELL: Error works fine.

Domain 2: Vista 32bit
ping NOVELL: Error works fine.

But when I start that ping at the same time, then it works only in that xen-domain, where I started ping it first. So it seems, that I can use the network only in one domain at a time.

Any ideas what to check, where to tune?

Shame on me. Windows Firewall inside the DomU’s was the problem.

… another reason to hate them :slight_smile: