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RHEL:DNS 解析可能需要 5 秒或更长时间

Solution In Progress - Updated -

Issue

  • DNS 解析较慢
  • SSH 登录较慢
  • Telnet 登录较慢
  • FTP 登录较慢

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Firewall

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