Alias /dl /usr/share/dl
<Directory /usr/share/dl>
AllowOverride Options
<IfModule mod_authz_core.c>
<RequireAny>
Require ip 127.0.0.1
Require ip ::1
</RequireAny>
</IfModule>
</Directory>
<Directory ~ /usr/share/dl/(style/)?include>
<IfModule mod_authz_core.c>
Require all denied
</IfModule>
</Directory>