Compile warning for Experimental symbol

Hi Support team,

When I compiling my project, there were several warnings always:

warning: Experimental symbol NET_L2_PPP is enabled.
warning: Experimental symbol NET_BUF_VARIABLE_DATA_SIZE is enabled.
warning: Experimental symbol NET_CONNECTION_MANAGER is enabled.

These configurations are needed in my application. Are there some formal symbols that can replace these Experimental symbols? Or how can I dismiss these warnings?

Thank you very much.

Best regards,

Yanpeng Wu

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