Symfony route path /config - is it reserved? - symfony

Question

when i try to add route with path /config, it shows 404 not found. Strange thing is that its not regular 404 symfony error that shows when i enter non existing route Here is apache access log:
127.0.0.1 - - [03/Feb/2015:11:32:26 +0100] "GET /config HTTP/1.1" 404 499 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0"
127.0.0.1 - - [03/Feb/2015:11:35:00 +0100] "GET /configasd HTTP/1.1" 404 743 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0"
127.0.0.1 - - [03/Feb/2015:11:36:42 +0100] "GET /configasdasd HTTP/1.1" 404 743 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0"
You can see that accessing /config generates 404 499 error code while accessing another non existing route generates 404 743 error code.
My question is: is "config" an reserved word for using in routes ? Is there an complete list of such words in symfony ?
EDIT: Route configuration:
in app/config/routing.yml:
myapp_config:
resource: "#MyappConfigBundle/Resources/config/routing.yml"
prefix: /config
in MyappConfigBundle/Resources/config/routing.yml:
myapp_config:
path: /
defaults: { _controller: MyappConfigBundle:Config:index }

Answer 1

The status code for response is only 404, 499 and 743 - are sizes of response.
Your server is configured to have at /config path some other resource. It may be configured with some global alias or you can just have file/folder or symlink/hardlink with name config in your web directory.
Check all the cases and you will solve your problem.