[En] Here is a little tip Fabien gave me. I am actually developing a plugin witch has quiet a lot of routes (about 40). Normally you can add the routes with the prependRoute function, like does the sfGuardplugin.
<?php
if (sfConfig::get('app_sf_guard_plugin_routes_register', true) && in_array('sfGuardAuth', sfConfig::get('sf_enabled_modules', array())))
{
$r = sfRouting::getInstance();
// preprend our routes
$r->prependRoute('sf_guard_signin', '/login', array('module' => 'sfGuardAuth', 'action' => 'signin'));
$r->prependRoute('sf_guard_signout', '/logout', array('module' => 'sfGuardAuth', 'action' => 'signout'));
$r->prependRoute('sf_guard_password', '/request_password', array('module' => 'sfGuardAuth', 'action' => 'password'));
}
?>
But for each prependRoute call an array_merge is done on all existing routes.
<?php
/**
* Adds a new route at the beginning of the current list of routes.
*
* @see connect
*/
public function prependRoute($name, $route, $default = array(), $requirements = array())
{
$routes = $this->routes;
$this->routes = array();
$newroutes = $this->connect($name, $route, $default, $requirements);
$this->routes = array_merge($newroutes, $routes);
return $this->routes;
}
?>
So the tip here is to save all routes, clear them, add the routes of the plugin and then append the saved routes. Witch can be done like this:
<?php
// Save and clear all routes
$r = sfRouting::getInstance();
$routes = $r->getRoutes();
$r->clearRoutes();
// Plugin home
$r->connect('plugin_home', '/my_super_plugin/homepage', array(
'module' => 'my_plugin_module',
'action' => 'my_plugin_action',
'additional_parameter' => 1
));
// Another route
$r->connect('plugin_home', '/my_super_plugin/section1', array(
'module' => 'my_plugin_module',
'action' => 'my_plugin_action_section1',
'additional_parameter' => 2
));
// ... other routes
// Then merge new routes with the saved one
$r->setRoutes($r->getRoutes() + $routes);
?>
That's it. 
Of course it is always better to have all routes of the application in the routing.yml but in my case it was not possible.
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