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ethtool Cannot get current device settings: Operation not supported in VMWare VM

Solution Verified - Updated -

Issue

RHEL 5.2 VMware ESX 4 VM で ethtool を使用して NIC スピードを設定するとエラーになります。Ethtool のバージョンは最新の 6-4 です。

# ethtool -s eth0 speed 100
Cannot get current device settings:Operation not supported
  not setting speed

Environment

  • RHEL 5.2 VMware ESX 4 VM.
  • Ethtool (最新バージョン 6-4)
  • vmxnet3 ドライバー

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