public function isLinkLocal(): bool
    {
        if ($this->is_link_local === null) {
            $this->is_link_local = $this->isIn(static::$link_local_block);
        }

        return $this->is_link_local;
    }
public function isLinkLocal(): bool
    {
        if ($this->is_link_local === null) {
            $this->is_link_local = $this->isIn(static::$link_local_block);
        }

        return $this->is_link_local;
    }
public function isLinkLocal ( ) : bool { if ( $ this -> is_link_local === null ) { $ this -> is_link_local = $ this -> isIn ( static :: $ link_local_block ) ; } return $ this -> is_link_local ; }
Determine if the address is a Link-Local address.

@return bool
Determine if the address is a Link - Local address .