[Fedora-xen] 2.6.17-1.2139_FC5xen0: No network - no installation

Hi, I'm testing Xen on FC5 x86_64 and have some problems. I had it working when I was running dom0 on "core" packages. But when I install "updates" (and thus uses 2.6.17-1.2139_FC5xen0) it seems like there is no network connection from the installing domU machine to the dom0 machine. The FC installer can't get a connection to the ftp-server running on the dom0 host. No dhcp, no static ip connection, and no virtual network devices can be seen from dom0. I've tried to update my installation image as described on http://fedoraproject.org/wiki/FedoraXenQuickstartFC5 - that didn't solve my problem. I'm installing with e.g.: xenguest-install.py -n test1 -f /tmp/x -r 512 -l ftp://10.0.0.1/pub /etc/xen/test1 contains e.g.: name = "test1" memory = "512" disk = [ 'phy:/dev/VolGroup00/lv_test1,xvda,w' ] vif = [ 'mac=00:16:3e:68:3a:54' ] uuid = "41dc63c6-ba10-8e3b-d475-453677117f8a" bootloader="/usr/bin/pygrub" What am I doing wrong? /Mads