The virt-install command line I used is below
sudo virt-install kvm ubuntu -v sudo virt-install -v -n golden-egg -r 256 --disk path=/var/lib/libvirt/images/golden-egg.qcow2,size=5 --os-type linux --os-variant ubuntulucid --force --cdrom=temp/ubuntu-10.04.1-server-amd64.iso --virt-type qemu --connect=qemu:///system --extra-args="interface=eth0 hostname=goldenegg domain=foo.internal netcfg/get_ipaddress=192.168.1.15 netcfg/get_netmask=255.255.255.0 netcfg/get_gateway=192.168.1.1 netcfg/get_nameservers=192.168.1.1 netcfg/disable_dhcp=true auto url=http://192.168.1.100/"
The ubuntu installer is launching but it goes into interactive mode. I've set a small webserver up to serve the preseed file and verified that it is being served on the url specified. However the server doesn't get hit on VM creation and there are no errors in the VM console or anything else I am able to go by.
Any suggests on how to proceed to get this working.