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NetworkManager がインターフェイスを起動させず、NetworkManager[xxxx]: <error> [1536251528.8348] device (eno1): addrconf6: failed to start neighbor discovery: failure creating libndp socket: Address family not supported by protocol (97) エラーを出力する

Solution Verified - Updated -

Issue

  • IPv6 が GRUB コマンドライン経由で無効になっているときにインターフェイスを初期化しようとすると、NetworkManager は次のエラーを報告します。
NetworkManager[1231]: <error> [1536251528.8348] device (eno1): addrconf6: failed to start neighbor discovery: failure creating libndp socket: Address family not supported by protocol (97)

Environment

  • Red Hat Enterprise Linux (RHEL) 8.5 以降

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