fix a lot of incorrect types

--- iputils/arping.c
+++ iputils/arping.c
@@ -434,7 +434,7 @@ main(int argc, char **argv)
 			}
 		} else if (!dad) {
 			int on = 1;
-			int alen = sizeof(saddr);
+			socklen_t alen = sizeof(saddr);
 
 			saddr.sin_port = htons(1025);
 			saddr.sin_addr = dst;
@@ -463,7 +463,7 @@ main(int argc, char **argv)
 	}
 
 	if (1) {
-		int alen = sizeof(me);
+		socklen_t alen = sizeof(me);
 		if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) {
 			perror("getsockname");
 			exit(2);
@@ -495,9 +495,9 @@ main(int argc, char **argv)
 
 	while(1) {
 		sigset_t sset, osset;
-		char packet[4096];
+		unsigned char packet[4096];
 		struct sockaddr_ll from;
-		int alen = sizeof(from);
+		socklen_t alen = sizeof(from);
 		int cc;
 
 		if ((cc = recvfrom(s, packet, sizeof(packet), 0,
--- iputils/clockdiff.c
+++ iputils/clockdiff.c
@@ -120,7 +120,7 @@ long rtt_sigma = 0;
 int
 measure(struct sockaddr_in * addr)
 {
-	int length;
+	socklen_t length;
 	int msgcount;
 	int cc, count;
 	fd_set ready;
@@ -299,7 +299,7 @@ char *myname, *hisname;
 int
 measure_opt(struct sockaddr_in * addr)
 {
-	int length;
+	socklen_t length;
 	int msgcount;
 	int cc, count;
 	fd_set ready;
@@ -597,7 +597,7 @@ main(int argc, char *argv[])
 	}
 	if (ip_opt_len) {
 		struct sockaddr_in myaddr;
-		int addrlen = sizeof(myaddr);
+		socklen_t addrlen = sizeof(myaddr);
 		unsigned char rspace[ip_opt_len];
 
 	        bzero(rspace, sizeof(rspace));
--- iputils/ping6.c
+++ iputils/ping6.c
@@ -313,7 +313,7 @@ int main(int argc, char *argv[])
 	hostname = target;
 
 	if (ipv6_addr_any(&source.sin6_addr)) {
-		int alen;
+		socklen_t alen;
 		int probe_fd = socket(AF_INET6, SOCK_DGRAM, 0);
 
 		if (probe_fd < 0) {
--- iputils/ping.c
+++ iputils/ping.c
@@ -260,7 +260,7 @@ main(int argc, char **argv)
 	}
 
 	if (source.sin_addr.s_addr == 0) {
-		int alen;
+		socklen_t alen;
 		struct sockaddr_in dst = whereto;
 		int probe_fd = socket(AF_INET, SOCK_DGRAM, 0);
 
--- iputils/ping_common.c
+++ iputils/ping_common.c
@@ -67,7 +67,7 @@ static void fill(char *patp)
 	int ii, jj, kk;
 	int pat[16];
 	char *cp;
-	char *bp = outpack+8;
+	u_char *bp = outpack+8;
 
 	for (cp = patp; *cp; cp++) {
 		if (!isxdigit(*cp)) {
@@ -393,7 +393,7 @@ resend:
 void sock_setbufs(int icmp_sock, int alloc)
 {
 	int rcvbuf, hold;
-	int tmplen = sizeof(hold);
+	socklen_t tmplen = sizeof(hold);
 
 	if (!sndbuf)
 		sndbuf = alloc;
@@ -464,7 +464,7 @@ void setup(int icmp_sock)
 
 	if (!(options & F_PINGFILLED)) {
 		int i;
-		char *p = outpack+8;
+		u_char *p = outpack+8;
 
 		/* Do not forget about case of small datalen,
 		 * fill timestamp area too!
--- iputils/rarpd.c
+++ iputils/rarpd.c
@@ -423,7 +423,7 @@ void serve_it(int fd)
 {
 	unsigned char buf[1024];
 	struct sockaddr_ll sll;
-	int sll_len = sizeof(sll);
+	socklen_t sll_len = sizeof(sll);
 	struct arphdr *a = (struct arphdr*)buf;
 	struct rarp_map *rmap;
 	unsigned char *ptr;
--- iputils/rdisc.c
+++ iputils/rdisc.c
@@ -451,7 +451,7 @@ next:
 	for (;;) {
 		u_char	packet[MAXPACKET];
 		int len = sizeof (packet);
-		int fromlen = sizeof (from);
+		socklen_t fromlen = sizeof (from);
 		int cc;
 
 		cc=recvfrom(s, (char *)packet, len, 0, 
--- iputils/tftpd.c
+++ iputils/tftpd.c
@@ -89,7 +89,7 @@ union {
 	struct	sockaddr_in  sin;
 	struct	sockaddr_in6 sin6;
 } from;
-int	fromlen;
+socklen_t	fromlen;
 
 #define MAXARG	1
 char	*dirs[MAXARG+1];
@@ -149,7 +149,8 @@ int main(int ac, char **av)
 	 */
 	{
 		int pid;
-		int i, j;
+		int i;
+		socklen_t j;
 
 		for (i = 1; i < 20; i++) {
 		    pid = fork();
--- iputils/traceroute6.c
+++ iputils/traceroute6.c
@@ -501,7 +501,7 @@ int main(int argc, char *argv[])
 				  (char *)&on, sizeof(on));
 
 	if (source == NULL) {
-		int alen;
+		socklen_t alen;
 		int probe_fd = socket(AF_INET6, SOCK_DGRAM, 0);
 
 		if (probe_fd < 0) {
@@ -622,7 +622,7 @@ wait_for_reply(sock, from, reset_timer)
 	fd_set fds;
 	static struct timeval wait;
 	int cc = 0;
-	int fromlen = sizeof (*from);
+	socklen_t fromlen = sizeof (*from);
 
 	FD_ZERO(&fds);
 	FD_SET(sock, &fds);