Ok in fact I founded why this was not working. I deleted and recreated my VM but there still was an entry corresponding to the old one in /var/lib/libvirt/dnsmasq/default.hostsfile. So I modified the MAC address and now it is working like a charm (after using HUP signal).
Ok in fact I founded why this was not working. I deleted and recreated my VM but there still was an entry corresponding to the old one in /var/lib/ libvirt/ dnsmasq/ default. hostsfile. So I modified the MAC address and now it is working like a charm (after using HUP signal).