Thank you Christian, Yes, but it's cobbler which builds this iso and the isolinux.cfg. I thought that cobbler could build with a specific DNS like IP, netmask and gateway. Effectively, after a buildiso, I can open the iso, add a dns into the isolinux.cfg (or replace all names by IP) and rebuild the iso, but it's a supplementary task :-( Stéphane L'integrite de ce message n'etant pas assuree sur internet, Natixis ne peut etre tenu responsable de son contenu. Toute utilisation ou diffusion non autorisee est interdite. Si vous n'etes pas destinataire de ce message, merci de le detruire et d'avertir l'expediteur. Ensemble, faisons un geste pour l'environnement : n'imprimons nos mails que si necessaire. The integrity of this message cannot be guaranteed on the Internet. Natixis can not therefore be considered responsible for the contents. Any unauthorized use or dissemination is prohibited. If you are not the intended recipient of this message, then please delete it and notify the sender. Let us mind the environment : let's print our mails only when necessary