Ember: same route, different paths

I would like a route to be called in 3 different ways:

  this.route('issue', {path: '/foo/:param1'});
  this.route('issue', {path: '/foo/:param1/:param2'});
  this.route('issue', {path: '/foo/:param1/:param2/:param3'});

But when I try to link-to for example using:

{{#link-to 'issue' issue.id issue.tag}}{{/link-to}}

I get this error:

Error: You didn't provide enough string/numeric parameters
to satisfy all of the dynamic segments for route issue

I tried to change the order of the calls in the router, without success. I think I'm lacking some comprehension on how the routes are detected. Any ideas?