When I try to start using virtual network in my virtual machine (I use virt-manager, but it does not matter) I got this error: "Child process (/usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --dhcp-script=/usr/libexec/libvirt_leaseshelper) unexpected exit status 1: dnsmasq: bad command line options: recompile with HAVE_SCRIPT defined to enable lease-change scripts" After recompiling net-dns/dnsmasq with USE=script everything is OK.
Hope its ok that I close this one as dupe. *** This bug has been marked as a duplicate of bug 519316 ***