how to enable logging for ethernet

I currently have a working project with ethernet shield ( ENC28J60 ).

I use the driver from NCS 1.5.1.

I want to know how to enable logging?

I found some posts on this forum and they suggest to use:
CONFIG_ETHERNET_LOG_LEVEL_DBG=y

I have added that, but I don't see any additional logging. I'm sure I'm sending data back and forth.
CMake does not complain about this setting.

Maybe I'm missing a setting?

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