***************
*** 1,5 ****
  #include <string.h>
  #include <stdlib.h>
  #include <netinet/in.h>
  #include "gskipv4.h"
  
--- 1,7 ----
  #include <string.h>
  #include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/socket.h>
  #include <netinet/in.h>
  #include "gskipv4.h"