problem with XEN and networking

[its_really_me]

Hi,

I'm running CentOS 5.4 and have problems with a USB-Ethernet network interface. It works in another, very similar environment but now I added Virtualization when installing the system.
The interfaces comes up as usb0 - as usual, and I'm sending and receiving packets (PPPoE) but there seems to be a link missing so that the ppp session can be build.
I wodered if this has to do with the Xen virtual environemnt running which installed a lot of virtula interfaces and bridges, but not for the USB interface.
The problem is that for PPPoE server, the interface must not have an IP address assigned - not an option when creating a new host interface. But even when I do so, the interface seems unlinked somehow.
Funny thing, I can monitor the incoming and outgoing packets using Wireshark.

I have not (yet) set up a virtual machine/guest system but the default machine is running.

Any guesses?

[its_really_me]

solved the problem myself. I was wrong with my assumption that Xen is the issue. pppoe-server from roaringpenguin runs fine on 32 bit /i386 systems in the version provided by CentOS (redhat/fedora) - version 3.5, but on 64 bit systems/x86_64 only the 3.10 version works which requires a manual install.

Thanks anywaysfor those who read the question and thought about it.