Hello,
Voici ma solution :
`$router = $this->getServiceLocator()->get('Router');
$route = $config['router']['routes']['myroute'];
// Changes on original route
$route['type'] = \Zend\Router\Http\Hostname::class;
$route['options']['route'] = ':subdomaine.'.gethostname();
// Apply changes
$router->addRoute('myroute', $route);`
Franck