apps/examples/nettest: Update test so that it can be used to test IPv6 TCP sockets

8 files changed, 545 insertions, 24 deletions

diff --git a/apps/examples/nettest/.gitignore b/apps/examples/nettest/.gitignore
index 9724db1ef..8598f0ee9 100644
--- a/apps/examples/nettest/.gitignore
+++ b/apps/examples/nettest/.gitignore
@@ -2,6 +2,7 @@
 /.depend
 /.built
 /host
+/config.h
 /*.asm
 /*.obj
 /*.rel
diff --git a/apps/examples/nettest/Kconfig b/apps/examples/nettest/Kconfig
index c502b8864..152912f3e 100644
--- a/apps/examples/nettest/Kconfig
+++ b/apps/examples/nettest/Kconfig
@@ -30,6 +30,25 @@ config EXAMPLES_NETTEST_NOMAC
 	bool "Use Canned MAC Address"
 	default n
 
+choice
+	prompt "IP Domain"
+	default EXAMPLES_NETTEST_IPv4 if NET_IPv4
+	default EXAMPLES_NETTEST_IPv6 if NET_IPv6 && !NET_IPv4
+
+config EXAMPLES_NETTEST_IPv4
+	bool "IPv4"
+	depends on NET_IPv4
+
+config EXAMPLES_NETTEST_IPv6
+	bool "IPv6"
+	depends on NET_IPv6
+
+endchoice # IP Domain
+
+if EXAMPLES_NETTEST_IPv4
+
+comment "IPv4 addresses"
+
 config EXAMPLES_NETTEST_IPADDR
 	hex "Target IP address"
 	default 0x0a000002
@@ -54,4 +73,386 @@ config EXAMPLES_NETTEST_CLIENTIP
 		host PC IP address (possibly the gateway address,
 		EXAMPLES_NETTEST_DRIPADDR?).
 
-endif
+endif # EXAMPLES_NETTEST_IPv4
+
+if EXAMPLES_NETTEST_IPv6
+
+comment "Target IPv6 address"
+
+config EXAMPLES_NETTEST_IPv6ADDR_1
+	hex "[0]"
+	default 0xfc00
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the first of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_2
+	hex "[1]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the second of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_3
+	hex "[2]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the third of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_4
+	hex "[3]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the fourth of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_5
+	hex "[4]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the fifth of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_6
+	hex "[5]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the sixth of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_7
+	hex "[6]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the seventh of the 8-values.  The
+		default for all eight values is fc00::2.
+
+config EXAMPLES_NETTEST_IPv6ADDR_8
+	hex "[7]"
+	default 0x0002
+	range 0x0 0xffff
+	---help---
+		Target IPv6 address.  This is a 16-bit integer value in host order.
+		Each of the eight values forming the full IP address must be
+		specified individually.  This is the last of the 8-values.  The
+		default for all eight values is fc00::2.
+
+comment "Router IPv6 address"
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_1
+	hex "[0]"
+	default 0xfc00
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the first of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_2
+	hex "[1]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the second of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_3
+	hex "[2]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the third of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_4
+	hex "[3]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the fourth of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_5
+	hex "[4]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the fifth of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_6
+	hex "[5]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the sixth of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_7
+	hex "[6]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the seventh of the
+		8-values.  The default for all eight values is fc00::1.
+
+config EXAMPLES_NETTEST_DRIPv6ADDR_8
+	hex "[7]"
+	default 0x0001
+	range 0x0 0xffff
+	---help---
+		Default router IP address (aka, Gateway).  This is a 16-bit integer
+		value in host order.  Each of the eight values forming the full IP 
+		address must be specified individually.  This is the last of the
+		8-values.  The default for all eight values is fc00::1.
+
+comment "IPv6 Network mask"
+
+config EXAMPLES_NETTEST_IPv6NETMASK_1
+	hex "[0]"
+	default 0xfe00
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the first of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_2
+	hex "[1]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the second of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_3
+	hex "[2]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the third of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_4
+	hex "[3]"
+	default 0x0000
+	range 0x0 0x0000
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the fourth of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_5
+	hex "[4]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the fifth of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_6
+	hex "[5]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the sixth of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_7
+	hex "[6]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the seventh of the 8-values.  The default for
+		all eight values is fe00::0.
+
+config EXAMPLES_NETTEST_IPv6NETMASK_8
+	hex "[7]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		Network mask.  This is a 16-bit integer value in host order.  Each
+		of the eight values forming the full IP address must be specified
+		individually.  This is the eighth of the 8-values.  The default for
+		all eight values is fe00::0.
+
+comment "Client IPv6 address"
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_1
+	hex "[0]"
+	default 0xfc00
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the first of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_2
+	hex "[1]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the second of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_3
+	hex "[2]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the Third of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_4
+	hex "[3]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the fourth of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_5
+	hex "[4]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the fifth of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_6
+	hex "[5]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the sixth of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_7
+	hex "[6]"
+	default 0x0000
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the seventh of the 8-values.
+
+config EXAMPLES_NETTEST_CLIENTIPv6ADDR_8
+	hex "[7]"
+	default 0x0001 if !EXAMPLES_NETTEST_SERVER
+	default 0x0002 if EXAMPLES_NETTEST_SERVER
+	range 0x0 0xffff
+	---help---
+		IP address of the client.  If the target is the client, then
+		EXAMPLES_NETTEST_CLIENTIP should be the same as
+		EXAMPLES_NETTEST_IPADDR (default).  If the target is the server,
+		then the default value of EXAMPLES_NETTEST_CLIENTIP is set to the
+		host PC IP address (possibly the gateway address,
+		EXAMPLES_NETTEST_DRIPADDR?).
+
+		This is a 16-bit integer value in host order. Each of the eight
+		values forming the full IP address must be specified individually.
+		This is the last of the 8-values.
+
+endif # EXAMPLES_NETTEST_IPv6
+endif # EXAMPLES_NETTEST
diff --git a/apps/examples/nettest/Makefile b/apps/examples/nettest/Makefile
index 91bf220c4..e4fb76a23 100644
--- a/apps/examples/nettest/Makefile
+++ b/apps/examples/nettest/Makefile
@@ -123,11 +123,14 @@ $(HOST_OBJS): %$(HOSTOBJEXT): %.c
 	@echo "CC:  $<"
 	@$(HOSTCC) -c $(HOSTCFLAGS) $< -o $@
 
-$(HOST_BIN): $(HOST_OBJS)
+$(HOST_BIN): config.h $(HOST_OBJS)
 	@echo "LD:  $@"
 	@$(HOSTCC) $(HOSTLDFLAGS) $(HOST_OBJS) -o $@
 
-.built: $(TARG_OBJS)
+config.h: $(TOPDIR)/include/nuttx/config.h
+	@cp $< $@
+
+.built: config.h $(TARG_OBJS)
 	$(call ARCHIVE, $(TARG_BIN), $(TARG_OBJS))
 	@touch .built
 
@@ -164,6 +167,7 @@ clean:
 	$(call DELFILE, $(HOST_BIN))
 	$(call DELFILE, .built)
 	$(call DELFILE, *.dSYM)
+	$(call DELFILE, config.h)
 	$(call CLEAN)
 
 distclean: clean
diff --git a/apps/examples/nettest/host.c b/apps/examples/nettest/host.c
index ad9d5e942..c376dac8e 100644
--- a/apps/examples/nettest/host.c
+++ b/apps/examples/nettest/host.c
@@ -37,6 +37,7 @@
  * Included Files
  ****************************************************************************/
 
+#include "config.h"
 #include "nettest.h"
 
 /****************************************************************************
diff --git a/apps/examples/nettest/nettest.c b/apps/examples/nettest/nettest.c
index 00642faac..59a56abf6 100644
--- a/apps/examples/nettest/nettest.c
+++ b/apps/examples/nettest/nettest.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/nettest/nettest.c
  *
- *   Copyright (C) 2007, 2009-2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2009-2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,7 +37,8 @@
  * Included Files
  ****************************************************************************/
 
-#include <nuttx/config.h>
+#include "config.h"
+//#include <nuttx/config.h>
 
 #include <stdint.h>
 #include <stdio.h>
@@ -59,6 +60,50 @@
  * Private Data
  ****************************************************************************/
 
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+/* Our host IPv6 address */
+
+static const uint16_t g_ipv6_hostaddr[8] =
+{
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_1),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_2),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_3),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_4),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_5),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_6),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_7),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6ADDR_8),
+};
+
+/* Default routine IPv6 address */
+
+static const uint16_t g_ipv6_draddr[8] =
+{
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_1),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_2),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_3),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_4),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_5),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_6),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_7),
+  HTONS(CONFIG_EXAMPLES_NETTEST_DRIPv6ADDR_8),
+};
+
+/* IPv6 netmask */
+
+static const uint16_t g_ipv6_netmask[8] =
+{
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_1),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_2),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_3),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_4),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_5),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_6),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_7),
+  HTONS(CONFIG_EXAMPLES_NETTEST_IPv6NETMASK_8),
+};
+#endif /* CONFIG_EXAMPLES_NETTEST_IPv6 */
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -73,7 +118,9 @@ int main(int argc, FAR char *argv[])
 int nettest_main(int argc, char *argv[])
 #endif
 {
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv4
   struct in_addr addr;
+#endif
 #ifdef CONFIG_EXAMPLES_NETTEST_NOMAC
   uint8_t mac[IFHWADDRLEN];
 #endif
@@ -87,23 +134,40 @@ int nettest_main(int argc, char *argv[])
   mac[3] = 0xad;
   mac[4] = 0xbe;
   mac[5] = 0xef;
-  netlib_setmacaddr("eth0", mac);
+  netlib_setmacaddr(EXAMPLES_NETTEST_IPv6NETMASK_, mac);
 #endif
 
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+  /* Set up our host address */
+
+  netlib_set_ipv6addr("eth0",
+                      (FAR const struct in6_addr *)g_ipv6_hostaddr);
+
+  /* Set up the default router address */
+
+  netlib_set_dripv6addr("eth0",
+                        (FAR const struct in6_addr *)g_ipv6_draddr);
+
+  /* Setup the subnet mask */
+
+  netlib_set_ipv6netmask("eth0",
+                        (FAR const struct in6_addr *)g_ipv6_netmask);
+#else
   /* Set up our host address */
 
   addr.s_addr = HTONL(CONFIG_EXAMPLES_NETTEST_IPADDR);
-  netlib_set_ipv4addr("eth0", &addr);
+  netlib_set_ipv4addr(EXAMPLES_NETTEST_IPv6NETMASK_, &addr);
 
   /* Set up the default router address */
 
   addr.s_addr = HTONL(CONFIG_EXAMPLES_NETTEST_DRIPADDR);
-  netlib_set_dripv4addr("eth0", &addr);
+  netlib_set_dripv4addr(EXAMPLES_NETTEST_IPv6NETMASK_, &addr);
 
   /* Setup the subnet mask */
 
   addr.s_addr = HTONL(CONFIG_EXAMPLES_NETTEST_NETMASK);
-  netlib_set_ipv4netmask("eth0", &addr);
+  netlib_set_ipv4netmask(EXAMPLES_NETTEST_IPv6NETMASK_, &addr);
+#endif
 
 #ifdef CONFIG_EXAMPLES_NETTEST_SERVER
   recv_server();
diff --git a/apps/examples/nettest/nettest.h b/apps/examples/nettest/nettest.h
index e571cb7ba..bf5fc8338 100644
--- a/apps/examples/nettest/nettest.h
+++ b/apps/examples/nettest/nettest.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/nettest/nettest.h
  *
- *   Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2009, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -48,7 +48,7 @@
 #endif
 
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
 #ifdef NETTEST_HOST
@@ -67,6 +67,14 @@
 #  else
 #    undef NETTEST_HAVE_SOLINGER
 #  endif
+#endif /* NETTEST_HOST */
+
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+#  define AF_INETX AF_INET6
+#  define PF_INETX PF_INET6
+#else
+#  define AF_INETX AF_INET
+#  define PF_INETX PF_INET
 #endif
 
 #define PORTNO     5471
diff --git a/apps/examples/nettest/nettest_client.c b/apps/examples/nettest/nettest_client.c
index 9b6b97f79..0f2d234d5 100644
--- a/apps/examples/nettest/nettest_client.c
+++ b/apps/examples/nettest/nettest_client.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/nettest/nettest-client.c
  *
- *   Copyright (C) 2007, 2011-2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2011-2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,6 +37,8 @@
  * Included Files
  ****************************************************************************/
 
+#include "config.h"
+
 #include <sys/socket.h>
 #include <netinet/in.h>
 
@@ -56,12 +58,17 @@
 
 void send_client(void)
 {
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+  struct sockaddr_in6 myaddr;
+#else
   struct sockaddr_in myaddr;
+#endif
   char *outbuf;
 #ifndef CONFIG_EXAMPLES_NETTEST_PERFORMANCE
   char *inbuf;
 #endif
   int sockfd;
+  socklen_t addrlen;
   int nbytessent;
 #ifndef CONFIG_EXAMPLES_NETTEST_PERFORMANCE
   int nbytesrecvd;
@@ -86,7 +93,7 @@ void send_client(void)
 
   /* Create a new TCP socket */
 
-  sockfd = socket(PF_INET, SOCK_STREAM, 0);
+  sockfd = socket(PF_INETX, SOCK_STREAM, 0);
   if (sockfd < 0)
     {
       printf("client socket failure %d\n", errno);
@@ -95,20 +102,35 @@ void send_client(void)
 
   /* Connect the socket to the server */
 
-  myaddr.sin_family      = AF_INET;
-  myaddr.sin_port        = HTONS(PORTNO);
-#if 0
-  myaddr.sin_addr.s_addr = HTONL(INADDR_LOOPBACK);
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+  myaddr.sin6_family            = AF_INET6;
+  myaddr.sin6_port              = HTONS(PORTNO);
+
+  myaddr.sin6_addr.s6_addr16[0] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_1);
+  myaddr.sin6_addr.s6_addr16[1] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_2);
+  myaddr.sin6_addr.s6_addr16[2] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_3);
+  myaddr.sin6_addr.s6_addr16[3] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_4);
+  myaddr.sin6_addr.s6_addr16[4] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_5);
+  myaddr.sin6_addr.s6_addr16[5] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_6);
+  myaddr.sin6_addr.s6_addr16[6] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_7);
+  myaddr.sin6_addr.s6_addr16[7] = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIPv6ADDR_8);
+
+  addrlen = sizeof(struct sockaddr_in6);
 #else
-  myaddr.sin_addr.s_addr = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIP);
+  myaddr.sin_family             = AF_INET;
+  myaddr.sin_port               = HTONS(PORTNO);
+  myaddr.sin_addr.s_addr        = HTONL(CONFIG_EXAMPLES_NETTEST_CLIENTIP);
+
+  addrlen = sizeof(struct sockaddr_in);
 #endif
 
   printf("client: Connecting...\n");
-  if (connect( sockfd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
+  if (connect( sockfd, (struct sockaddr*)&myaddr, addrlen) < 0)
     {
       printf("client: connect failure: %d\n", errno);
       goto errout_with_socket;
     }
+
   printf("client: Connected\n");
 
   /* Initialize the buffer */
@@ -140,6 +162,7 @@ void send_client(void)
                   nbytessent, SENDSIZE);
           goto errout_with_socket;
         }
+
       printf("Sent %d bytes\n", nbytessent);
     }
 #else
@@ -176,6 +199,7 @@ void send_client(void)
           printf("client: The server closed the connection\n");
           goto errout_with_socket;
         }
+
       totalbytesrecvd += nbytesrecvd;
       printf("client: Received %d of %d bytes\n", totalbytesrecvd, SENDSIZE);
     }
diff --git a/apps/examples/nettest/nettest_server.c b/apps/examples/nettest/nettest_server.c
index 4b4a4e6db..d2087a7ef 100644
--- a/apps/examples/nettest/nettest_server.c
+++ b/apps/examples/nettest/nettest_server.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/nettest/nettest-server.c
  *
- *   Copyright (C) 2007, 2011-2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2011-2012, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,12 +37,15 @@
  * Included Files
  ****************************************************************************/
 
+#include "config.h"
+
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <errno.h>
 
@@ -56,7 +59,11 @@
 
 void recv_server(void)
 {
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+  struct sockaddr_in6 myaddr;
+#else
   struct sockaddr_in myaddr;
+#endif
 #ifdef NETTEST_HAVE_SOLINGER
   struct linger ling;
 #endif
@@ -82,10 +89,9 @@ void recv_server(void)
       exit(1);
     }
 
-
   /* Create a new TCP socket */
 
-  listensd = socket(PF_INET, SOCK_STREAM, 0);
+  listensd = socket(PF_INETX, SOCK_STREAM, 0);
   if (listensd < 0)
     {
       printf("server: socket failure: %d\n", errno);
@@ -103,11 +109,21 @@ void recv_server(void)
 
   /* Bind the socket to a local address */
 
+#ifdef CONFIG_EXAMPLES_NETTEST_IPv6
+  myaddr.sin6_family     = AF_INET6;
+  myaddr.sin6_port       = HTONS(PORTNO);
+  memset(&myaddr.sin6_addr, 0, sizeof(struct in6_addr));
+
+  addrlen = sizeof(struct sockaddr_in6);
+#else
   myaddr.sin_family      = AF_INET;
   myaddr.sin_port        = HTONS(PORTNO);
   myaddr.sin_addr.s_addr = INADDR_ANY;
 
-  if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
+  addrlen = sizeof(struct sockaddr_in);
+#endif
+
+  if (bind(listensd, (struct sockaddr*)&myaddr, addrlen) < 0)
     {
       printf("server: bind failure: %d\n", errno);
       goto errout_with_listensd;
@@ -124,13 +140,13 @@ void recv_server(void)
   /* Accept only one connection */
 
   printf("server: Accepting connections on port %d\n", PORTNO);
-  addrlen = sizeof(struct sockaddr_in);
   acceptsd = accept(listensd, (struct sockaddr*)&myaddr, &addrlen);
   if (acceptsd < 0)
     {
       printf("server: accept failure: %d\n", errno);
       goto errout_with_listensd;
     }
+
   printf("server: Connection accepted -- receiving\n");
 
   /* Configure to "linger" until all data is sent when the socket is closed */
@@ -165,6 +181,7 @@ void recv_server(void)
       printf("Received %d bytes\n", nbytesread);
     }
 #else
+
   /* Receive canned message */
 
   totalbytesread = 0;
@@ -219,6 +236,7 @@ void recv_server(void)
       printf("server: send failed: %d\n", errno);
       goto errout_with_acceptsd;
     }
+
   printf("server: Sent %d bytes\n", nbytessent);
 
   /* If this platform only does abortive disconnects, then wait a bit to get the