Hi,
When I try compiling tests/driver_enc28j60 with the following command,

BOARD=stm32f4discovery USEMODULE+=gnrc_uhcpc make all

I got an error:

RIOT/sys/net/application_layer/uhcp/uhcp.c:11:23: fatal error: arpa/inet.h: No such file or directory
 #include <arpa/inet.h>
                       ^
compilation terminated.

Is it an unexpected error, or did I miss something? I would appreciate if someone let me know.
Thank you.