無法解析rubygems.org（重定向過多）

Question

由於某種原因，我無業游民的VM無法解析rubygems.org 。 昨天工作正常，今天我沒有進行任何更改，現在不再起作用：

全新Ubuntu安裝

vagrant -v # 1.5.3
vagrant init hashicorp/precise64 # ubuntu
vagrant up
vagrant ssh

安裝紅寶石寶石（失敗）

sudo apt-get update
sudo apt-get install rubygems -y

# here comes the failure...
sudo gem install librarian-puppet

"ERROR:  Could not find a valid gem 'librarian-puppet' (>= 0) in any repository
ERROR:  While executing gem ... (Gem::RemoteFetcher::FetchError)
too many redirects (http://www1.dlinksearch.com/?..."

無法解析rubygems.org

wget rubygems.org 

"Resolving rubygems.org (rubygems.org)... ::ffff:67.215.65.145, 54.245.255.174
Connecting to rubygems.org (rubygems.org)|::ffff:67.215.65.145|:80... connected.
HTTP request sent, awaiting response... 303 See Other
Location: http://www1.dlinksearch.com/?url=rubygems%2Eorg [following]
--2014-04-23 02:28:15--  http://www1.dlinksearch.com/?url=rubygems%2Eorg
Resolving www1.dlinksearch.com (www1.dlinksearch.com)... ::ffff:67.215.65.145, 
20 redirections exceeded."

其他網站似乎還不錯

wget google.com
Resolving google.com (google.com)... 173.194.126.8, 173.194.126.14, 173.194.126.2, ...
HTTP request sent, awaiting response... 200 OK
2014-04-23 02:36:57 (651 KB/s) - `index.html.2' saved [13872]

我可以按IP地址解析

wget 54.245.255.174 
--2014-04-23 02:44:59--  http://rubygems.org/
Resolving rubygems.org (rubygems.org)... ::ffff:67.215.65.145, 54.245.255.174
HTTP request sent, awaiting response... 200 OK

更多信息

gem env 
  - RUBYGEMS VERSION: 1.8.15
  - RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
  ...
  - REMOTE SOURCES:
    - http://rubygems.org/

它在工作

• 昨天晚上這個工作很好！
• VM / etc / hosts看起來不錯
• 我可以從桌面瀏覽器訪問rubygems.org，沒有任何問題
• 已經嘗試銷毀並創建新的虛擬機
• 嘗試重新啟動計算機

Answer 1

因此，從評論來看，顯然存在DNS緩存問題，其中“ :: ffff：67.215.65.145”作為rubygems的有效地址返回。 “ 54.245.255.174”是有效地址，如dig @8.8.8.8 ANY rubygems.org會顯示dig @8.8.8.8 ANY rubygems.org 。