The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

1.3 NetworkManager Enhancement

NetworkManager now supports manual Domain Name System (DNS) configuration with dns=none. You can prevent NetworkManager from modifying the /etc/resolv.conf file by setting the dns=none property. This feature is useful when manually configuring DNS.

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