raspberry pi->Address系列上的ruby和selenium webdriver不受协议支持-套接字（2）（错误号：：EAFNOSUPPORT）

我想在我的树莓圆周率上运行一个红宝石纸条。我已经通过rvm安装了ruby。我确信，我使用的是正确的版本：

$ rvm current
ruby-1.9.3-p194

当我运行脚本时，会得到以下结果：

./test.rb 
/home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:25:in `initialize': Address family not supported by protocol - socket(2) (Errno::EAFNOSUPPORT)
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:25:in `new'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:25:in `block in free?'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:23:in `each'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:23:in `free?'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/port_prober.rb:5:in `above'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/chrome/service.rb:33:in `default_service'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/chrome/bridge.rb:14:in `initialize'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/driver.rb:37:in `new'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/driver.rb:37:in `for'
from /home/pi/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver.rb:65:in `for'
from ./test.rb:82:in `block in <main>'
from ./test.rb:54:in `each'
from ./test.rb:54:in `<main>'

有什么想法吗，怎么了？我已尝试重新启动，但这并不能解决问题…

可能是解决此类问题的更好地方。