diff -ru iputils/include-glibc/netinet/in.h iputils-clean/include-glibc/netinet/in.h
--- iputils/include-glibc/netinet/in.h	2000-06-18 14:57:25.000000000 -0400
+++ iputils-clean/include-glibc/netinet/in.h	2003-09-03 11:21:55.000000000 -0400
@@ -8,4 +8,45 @@
 
 #define SOL_IP	0
 
-#endif	/* netinet/in.h */
+/* Functions to convert between host and network byte order.
+
+   Please note that these functions normally take `unsigned long int' or
+   `unsigned short int' values as arguments and also return them.  But
+   this was a short-sighted decision since on different systems the types
+   may have different representations but the values are always the same.  */
+
+extern u_int32_t ntohl (u_int32_t __netlong) __THROW __attribute__ ((__const__));
+extern u_int16_t ntohs (u_int16_t __netshort)
+     __THROW __attribute__ ((__const__));
+extern u_int32_t htonl (u_int32_t __hostlong)
+     __THROW __attribute__ ((__const__));
+extern u_int16_t htons (u_int16_t __hostshort)
+     __THROW __attribute__ ((__const__));
+
+#include <endian.h>
+
+/* Get machine dependent optimized versions of byte swapping functions.  */
+#include <bits/byteswap.h>
+
+#ifdef __OPTIMIZE__
+/* We can optimize calls to the conversion functions.  Either nothing has
+   to be done or we are using directly the byte-swapping functions which
+   often can be inlined.  */
+# if __BYTE_ORDER == __BIG_ENDIAN
+/* The host byte order is the same as network byte order,
+   so these functions are all just identity.  */
+# define ntohl(x)	(x)
+# define ntohs(x)	(x)
+# define htonl(x)	(x)
+# define htons(x)	(x)
+# else
+#  if __BYTE_ORDER == __LITTLE_ENDIAN
+#   define ntohl(x)	__bswap_32 (x)
+#   define ntohs(x)	__bswap_16 (x)
+#   define htonl(x)	__bswap_32 (x)
+#   define htons(x)	__bswap_16 (x)
+#  endif
+# endif
+#endif
+
+#endif /* netinet/in.h */
diff -ru iputils/ping6.c iputils-clean/ping6.c
--- iputils/ping6.c	2003-09-03 11:22:46.000000000 -0400
+++ iputils-clean/ping6.c	2003-09-03 11:15:42.000000000 -0400
@@ -879,7 +879,7 @@
 	once = 1;
 
 	/* Patch bpflet for current identifier. */
-	insns[1] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __constant_htons(ident), 0, 1);
+	insns[1] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, htons(ident), 0, 1);
 
 	if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)))
 		perror("WARNING: failed to install socket filter\n");
diff -ru iputils/ping.c iputils-clean/ping.c
--- iputils/ping.c	2003-09-03 11:22:46.000000000 -0400
+++ iputils-clean/ping.c	2003-09-03 11:15:26.000000000 -0400
@@ -1196,7 +1196,7 @@
 	once = 1;
 
 	/* Patch bpflet for current identifier. */
-	insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __constant_htons(ident), 0, 1);
+	insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, htons(ident), 0, 1);
 
 	if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)))
 		perror("WARNING: failed to install socket filter\n");