[U-Boot] Problem with NetConsole

Hi, I'm trying to add the NetConsole to my project. I've set all the related environment variables

when i start UBoot and then type "run nc" i see that i receive the data i'm sending from remote PC, but if i call "run nc" from within the UBoot, using run_command("run nc", 1);, i don't receive that data.

Am i doing something wrong?

Thanks, Alex