[fedora-virt] how to change dhcp range for default virbr0

Hello, I want to make the default network assign ips in the range of 192.168.122.101 - 192.168.122.254 instead than default values. Changing the file /etc/libvirt/qemu/networks/default.xml and restarting libvirtd and/or the system it seems the file actually is not parsed as I see: [root@tekkaman ~]# ps -ef|grep dns nobody 1464 1 0 18:59 ? 00:00:00 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --listen-address 192.168.122.1 --except-interface lo --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-lease-max=253 and the same range in virt-manager networks window.... Is there a method to change behaviour so that in default virbr0 I have s subset of fixed ip and a subset of dhcp assigned ones? Using F12 + rawvirt repository libvirt-0.7.6-1.fc12.x86_64 Thanks, Gianluca