I am having problem with this .htacess script;

RewriteEngine On
RewriteCond %{HTTP_HOST} !^(.*)\.mysite\.com$ [NC]
RewriteRule ^(.*)$ http://www.mysite.com/f/$1 [R=301,L]

RewriteEngine On
RewriteCond %{HTTP_HOST} !^(.*)\.www\.mysite\.com$ [NC]
RewriteRule ^(.*)$ http://www.mysite.com/f/$1 [R=301,L]


The problem is it tries opening http://www.mysite.com/f/f/f/f/f/fffffffff/f/f/f/f/f/f/
in this case the /f is being repeated.