--- /dev/null
+--- a/src/arpd/io.c
++++ b/src/arpd/io.c
+@@ -615,7 +615,7 @@ int ip_itf_info(int number,uint32_t *ip,
+ int get_local(int fd,struct sockaddr_atmsvc *addr)
+ {
+ int result;
+- size_t length;
++ socklen_t length;
+
+ length = sizeof(struct sockaddr_atmsvc);
+ result = getsockname(fd,(struct sockaddr *) addr,&length);
+--- a/src/led/conn.c
++++ b/src/led/conn.c
+@@ -405,7 +405,7 @@ Conn_t *accept_conn(Conn_t *conn)
+ {
+ Conn_t *new;
+ struct sockaddr_atmsvc addr;
+- size_t len;
++ socklen_t len;
+ int fd;
+ char buff[MAX_ATM_ADDR_LEN+1];
+
+@@ -538,7 +538,7 @@ static int handle_accept(Conn_t *conn)
+ */
+ static int handle_data(Conn_t *conn)
+ {
+- char buff[MAX_CTRL_FRAME];
++ unsigned char buff[MAX_CTRL_FRAME];
+ int retval;
+
+ retval = recv_frame(conn, buff, sizeof(buff));
+--- a/src/led/frames.c
++++ b/src/led/frames.c
+@@ -312,7 +312,7 @@ static void handle_ready_ind(Conn_t *con
+ * dependant handler functions.
+ * Returns < 0 for serious error
+ */
+-int handle_frame(Conn_t *conn, char *buff, int size)
++int handle_frame(Conn_t *conn, unsigned char *buff, int size)
+ {
+ struct ctrl_frame *frame;
+
+--- a/src/led/frames.h
++++ b/src/led/frames.h
+@@ -13,7 +13,7 @@ int validate_frame(unsigned char *buff,
+ void send_ready_ind(Conn_t *conn);
+ void send_register_req(void);
+
+-int handle_frame(Conn_t *conn, char *buff, int size);
++int handle_frame(Conn_t *conn, unsigned char *buff, int size);
+ uint32_t send_flush_req(Conn_t *conn);
+
+ void parse_tlvs(uint16_t opcode, unsigned char *tlvp, int numtlvs, int sizeoftlvs);
+--- a/src/led/join.c
++++ b/src/led/join.c
+@@ -43,7 +43,7 @@ static int read_join_rsp(char *buff, int
+ static int parse_join_rsp(unsigned char *buff, int size);
+
+ static int get_bus_addr(struct sockaddr_atmsvc *addr);
+-static int read_bus_arp(Conn_t *conn, struct sockaddr_atmsvc *addr, char *buff, int buffsize);
++static int read_bus_arp(Conn_t *conn, struct sockaddr_atmsvc *addr, unsigned char *buff, int buffsize);
+
+ /*
+ * 5.1, Initial state
+@@ -693,7 +693,7 @@ static int get_bus_addr(struct sockaddr_
+ fd_set rfds;
+ struct timeval tv;
+ int n = 0, retval, timeout;
+- char buff[MAX_CTRL_FRAME];
++ unsigned char buff[MAX_CTRL_FRAME];
+
+ timeout = 4; /* wait response for 4 seconds */
+ lec_params.c7c_current_timeout = 1;
+@@ -740,7 +740,7 @@ static int get_bus_addr(struct sockaddr_
+ * Tries to read BUS ATM address in *addr
+ * returns < 0 for error, 0 for not found > 0 for success
+ */
+-static int read_bus_arp(Conn_t *conn, struct sockaddr_atmsvc *addr, char *buff, int buffsize)
++static int read_bus_arp(Conn_t *conn, struct sockaddr_atmsvc *addr, unsigned char *buff, int buffsize)
+ {
+ int frame_size;
+ struct ctrl_frame *frame;