Session Match IP False No Working

I just looked the source code and it says this about the Match IP.

PHP Code:

/**
    * Whether to match the user's IP address when reading the session data.
    *
    * WARNING: If you're using the database driver, don't forget to update
    * your session table's PRIMARY KEY when changing this setting.
    *
    * @var bool
    */
    protected $sessionMatchIP = false; 


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