Does Datatables ajax request modify the address?

kometa

Hey I do have a basic table with an ajax source but looks like it does modify request address. Sometimes it's a problem for my task.

That's how I initialize my table:

$('#table').dataTable( {
          "ajax": {
              "url": "/filter",

              "dataSrc": "items"
              }
          } );

it should do a GET request to domain.tld/filter but what it does is: domaid.tld/filter?_=1421509614099
The number is incremented with each request by one.

Regular jQuery ajax request doesn't add the number
Any idea what might be the reason?