xfrd_handle_notify_and_start_xfr
xfrd_handle_notify_and_start_xfr(zone, NULL);
xfrd_handle_notify_and_start_xfr(zone, NULL);
xfrd_handle_notify_and_start_xfr(zone, NULL);
xfrd_handle_notify_and_start_xfr(zone, NULL);
xfrd_handle_notify_and_start_xfr(zone, have_soa?&soa:NULL);
void xfrd_handle_notify_and_start_xfr(xfrd_zone_type* zone, xfrd_soa_type* soa);