This patch from Bart Visscher <magick@linux-fan.com> adds

IPV6 support to busybox.  This patch does the following:
    * Add IPv6 support to libbb
    * Enable IPv6 interface address display
    * Add IPv6 config option
    * Adds ping6, an adaptation of the ping applet for IPv6
    * Adds support routines for ping6:
	- xgethostbyname2
	- create_icmp6_socket
    * Adds ifconfig support for IPv6
    * Add support IPv6 to netstat
    * Add IPv6 support to route
Thanks Bart!

4 files changed, 40 insertions, 1 deletions

diff --git a/include/applets.h b/include/applets.h
index c2d7acf4b..b6397a656 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -344,6 +344,9 @@
 #ifdef CONFIG_PING
 	APPLET(ping, ping_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_PING6
+	APPLET(ping6, ping6_main, _BB_DIR_BIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_PIVOT_ROOT
  	APPLET(pivot_root, pivot_root_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
 #endif
diff --git a/include/inet_common.h b/include/inet_common.h
index 2c5e8f673..8050afc67 100644
--- a/include/inet_common.h
+++ b/include/inet_common.h
@@ -4,7 +4,7 @@
  *
  * Heavily modified by Manuel Novoa III       Mar 12, 2001
  *
- * Version:     $Id: inet_common.h,v 1.1 2001/11/10 12:18:42 andersen Exp $
+ * Version:     $Id: inet_common.h,v 1.2 2002/07/03 11:46:38 andersen Exp $
  *
  */
 
@@ -28,3 +28,6 @@ extern int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirs
  */
 extern int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
 			 int numeric, unsigned int netmask);
+
+extern int INET6_resolve(char *name, struct sockaddr_in6 *sin6);
+extern int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6, int numeric);
diff --git a/include/libbb.h b/include/libbb.h
index 2b9fd5fd6..f83cc7623 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -233,7 +233,10 @@ extern void gz_close(int gunzip_pid);
 extern FILE *gz_open(FILE *compressed_file, int *pid);
 
 extern struct hostent *xgethostbyname(const char *name);
+extern struct hostent *xgethostbyname2(const char *name, int af);
 extern int create_icmp_socket(void);
+extern int create_icmp6_socket(void);
+extern int xconnect(const char *host, const char *port);
 
 char *dirname (char *path);
 
diff --git a/include/usage.h b/include/usage.h
index 5feb3ac10..87678f5e9 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -733,12 +733,19 @@
 #else
   #define USAGE_IFCONFIG_OPT_A(a)
 #endif
+#ifdef CONFIG_FEATURE_IPV6
+  #define USAGE_IPV6(a) a
+#else
+  #define USAGE_IPV6(a)
+#endif
 
 #define ifconfig_trivial_usage \
 	USAGE_IFCONFIG_OPT_A("[-a]") " <interface> [<address>]"
 #define ifconfig_full_usage \
 	"configure a network interface\n\n" \
 	"Options:\n" \
+	USAGE_IPV6("[add <address>[/<prefixlen>]]\n") \
+	USAGE_IPV6("[del <address>[/<prefixlen>]]\n") \
 	"\t[[-]broadcast [<address>]]  [[-]pointopoint [<address>]]\n" \
 	"\t[netmask <address>]  [dstaddr <address>]\n" \
 	USAGE_SIOCSKEEPALIVE("\t[outfill <NN>] [keepalive <NN>]\n") \
@@ -1370,6 +1377,29 @@
 	"1 packets transmitted, 1 packets received, 0% packet loss\n" \
 	"round-trip min/avg/max = 20.1/20.1/20.1 ms\n" 
 
+#ifndef CONFIG_FEATURE_FANCY_PING6
+#define ping6_trivial_usage "host"
+#define ping6_full_usage    "Send ICMP ECHO_REQUEST packets to network hosts"
+#else
+#define ping6_trivial_usage \
+	"[OPTION]... host"
+#define ping6_full_usage \
+	"Send ICMP ECHO_REQUEST packets to network hosts.\n\n" \
+	"Options:\n" \
+	"\t-c COUNT\tSend only COUNT pings.\n" \
+	"\t-s SIZE\t\tSend SIZE data bytes in packets (default=56).\n" \
+	"\t-q\t\tQuiet mode, only displays output at start\n" \
+	"\t\t\tand when finished."
+#endif
+#define ping6_example_usage \
+	"$ ping6 ip6-localhost\n" \
+	"PING ip6-localhost (::1): 56 data bytes\n" \
+	"64 bytes from ::1: icmp6_seq=0 ttl=64 time=20.1 ms\n" \
+	"\n" \
+	"--- ip6-localhost ping statistics ---\n" \
+	"1 packets transmitted, 1 packets received, 0% packet loss\n" \
+	"round-trip min/avg/max = 20.1/20.1/20.1 ms\n" 
+
 #define pivot_root_trivial_usage \
 	"NEW_ROOT PUT_OLD"
 #define pivot_root_full_usage \