default or selected kernelversion does not have config value CONFIG_NET_DSA_LEGACY.
Result is shown for kernelversion 6.9.9
Support for older platform device and Device Tree registration
configname: CONFIG_NET_DSA_LEGACY
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Support for older platform device and Device Tree registration
In linux kernel since version 4.2 (release Date: 2015-08-30)
Say Y if you want to enable support for the older platform device and
deprecated Device Tree binding registration.
This feature is scheduled for removal in 4.17.
deprecated Device Tree binding registration.
This feature is scheduled for removal in 4.17.