Use standard C99 types
diff --git a/networking/udhcp/socket.h b/networking/udhcp/socket.h
index d259ef7..66179d4 100644
--- a/networking/udhcp/socket.h
+++ b/networking/udhcp/socket.h
@@ -2,7 +2,7 @@
 #ifndef _SOCKET_H
 #define _SOCKET_H
 
-int read_interface(char *interface, int *ifindex, u_int32_t *addr, unsigned char *arp);
-int listen_socket(unsigned int ip, int port, char *inf);
+int read_interface(char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
+int listen_socket(uint32_t ip, int port, char *inf);
 
 #endif