--- scan.c.org	2010-05-11 10:36:49.000000000 +0200
+++ scan.c	2010-05-11 10:37:44.000000000 +0200
@@ -356,7 +356,7 @@
 static void receiver(struct portinfo *pi, int childpid)
 {
 	struct myiphdr ip;
-	char packet[IP_MAX_SIZE+linkhdr_size];
+	unsigned char packet[IP_MAX_SIZE+linkhdr_size];
 
 	while(1)
 	{
@@ -456,7 +456,7 @@
 				continue;
 			/* time to copy headers in a safe place */
 			p = packet+linkhdr_size+iphdrlen;
-			memcpy(&icmp, p, sizeof(subtcp));
+			memcpy(&icmp, p, sizeof(p));
 			p += sizeof(icmp);
 			memcpy(&subip, p, sizeof(ip));
 			p += sizeof(ip);