diff --git a/bindings/SigarWrapper.pm b/bindings/SigarWrapper.pm
index abbe5942..3151c2fd 100644
--- a/bindings/SigarWrapper.pm
+++ b/bindings/SigarWrapper.pm
@@ -1039,6 +1039,18 @@ use vars qw(%classes %cmds);
          desc => '',
          plat => '*'
       },
+      {
+         name => 'address6', type => 'NetAddress',
+         desc => '',
+      },
+      {
+         name => 'prefix6_length', type => 'Int',
+         desc => '',
+      },
+      {
+         name => 'scope6', type => 'Int',
+         desc => '',
+      },
       {
          name => 'destination', type => 'NetAddress',
          desc => '',
diff --git a/bindings/java/src/org/hyperic/sigar/cmd/Ifconfig.java b/bindings/java/src/org/hyperic/sigar/cmd/Ifconfig.java
index 0ca7a775..215e6e53 100644
--- a/bindings/java/src/org/hyperic/sigar/cmd/Ifconfig.java
+++ b/bindings/java/src/org/hyperic/sigar/cmd/Ifconfig.java
@@ -117,6 +117,13 @@ public class Ifconfig extends SigarCommandBase {
                 bcast +
                 "  Mask:" + ifconfig.getNetmask());
 
+        if (ifconfig.getPrefix6Length() != 0) {
+            println("\t" +
+                    "inet6 addr: " + ifconfig.getAddress6() + "/" +
+                    ifconfig.getPrefix6Length() +
+                    " Scope:" + ifconfig.getScope6());
+        }
+
         println("\t" +
                 NetFlags.getIfFlagsString(flags) +
                 " MTU:" + ifconfig.getMtu() +
diff --git a/bindings/java/src/org/hyperic/sigar/test/TestNetIf.java b/bindings/java/src/org/hyperic/sigar/test/TestNetIf.java
index f84edfa4..7e7117ce 100644
--- a/bindings/java/src/org/hyperic/sigar/test/TestNetIf.java
+++ b/bindings/java/src/org/hyperic/sigar/test/TestNetIf.java
@@ -18,6 +18,9 @@
 
 package org.hyperic.sigar.test;
 
+import java.net.InetAddress;
+import java.net.Inet6Address;
+
 import org.hyperic.sigar.Sigar;
 import org.hyperic.sigar.SigarException;
 import org.hyperic.sigar.SigarNotImplementedException;
@@ -44,6 +47,14 @@ public class TestNetIf extends SigarTestCase {
             assertTrueTrace("Address", ifconfig.getAddress());
             assertTrueTrace("Netmask", ifconfig.getNetmask());
 
+            if (ifconfig.getPrefix6Length() != 0) {
+                assertTrueTrace("Address6", ifconfig.getAddress6());
+                InetAddress in6 =
+                    InetAddress.getByName(ifconfig.getAddress6());
+                assertTrue(in6 instanceof Inet6Address);
+                traceln("Link=" + in6.isLinkLocalAddress());
+            }
+
             if (!getStats) {
                 continue;
             }
diff --git a/bindings/ruby/examples/ifconfig.rb b/bindings/ruby/examples/ifconfig.rb
index b8b87eaa..2e3181e4 100644
--- a/bindings/ruby/examples/ifconfig.rb
+++ b/bindings/ruby/examples/ifconfig.rb
@@ -32,6 +32,11 @@ iflist.each do |ifname|
   puts "\t" + "inet addr:" + ifconfig.address +
     ptp + bcast + " Mask:" + ifconfig.netmask
 
+  if ifconfig.prefix6_length != 0
+    puts "\t" + "inet6 addr: " + ifconfig.address6 + "/" +
+      ifconfig.prefix6_length.to_s + " Scope:" + ifconfig.scope6.to_s
+  end
+
   puts "\t" +
     Sigar.net_interface_flags_to_s(flags) +
     " MTU:" + ifconfig.mtu.to_s +
diff --git a/include/sigar.h b/include/sigar.h
index a8c62364..1de9dba5 100644
--- a/include/sigar.h
+++ b/include/sigar.h
@@ -587,6 +587,15 @@ SIGAR_DECLARE(int) sigar_net_route_list_destroy(sigar_t *sigar,
 
 #define SIGAR_NULL_HWADDR "00:00:00:00:00:00"
 
+/* scope values from linux-2.6/include/net/ipv6.h */
+#define SIGAR_IPV6_ADDR_ANY        0x0000
+#define SIGAR_IPV6_ADDR_UNICAST    0x0001
+#define SIGAR_IPV6_ADDR_MULTICAST  0x0002
+#define SIGAR_IPV6_ADDR_LOOPBACK   0x0010
+#define SIGAR_IPV6_ADDR_LINKLOCAL  0x0020
+#define SIGAR_IPV6_ADDR_SITELOCAL  0x0040
+#define SIGAR_IPV6_ADDR_COMPATv4   0x0080
+
 typedef struct {
     char name[16];
     char type[64];
@@ -596,6 +605,9 @@ typedef struct {
     sigar_net_address_t destination;
     sigar_net_address_t broadcast;
     sigar_net_address_t netmask;
+    sigar_net_address_t address6;
+    int prefix6_length;
+    int scope6;
     sigar_uint64_t
         flags,
         mtu,
diff --git a/include/sigar_private.h b/include/sigar_private.h
index ad5ba4b7..fde2465f 100644
--- a/include/sigar_private.h
+++ b/include/sigar_private.h
@@ -291,6 +291,30 @@ int sigar_net_connection_list_grow(sigar_net_connection_list_t *connlist);
     SIGAR_ZERO(&ifconfig->hwaddr.addr.mac); \
     ifconfig->hwaddr.family = SIGAR_AF_LINK
 
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig);
+
+#define sigar_net_interface_ipv6_config_init(ifconfig) \
+    ifconfig->address6.family = SIGAR_AF_INET6; \
+    ifconfig->prefix6_length = 0; \
+    ifconfig->scope6 = 0
+
+#define SIGAR_SIN6(s) ((struct sockaddr_in6 *)(s))
+
+#define SIGAR_SIN6_ADDR(s) &SIGAR_SIN6(s)->sin6_addr
+
+#define sigar_net_interface_scope6_set(ifconfig, addr) \
+    if (IN6_IS_ADDR_LINKLOCAL(addr)) \
+        ifconfig->scope6 = SIGAR_IPV6_ADDR_LINKLOCAL; \
+    else if (IN6_IS_ADDR_SITELOCAL(addr)) \
+        ifconfig->scope6 = SIGAR_IPV6_ADDR_SITELOCAL; \
+    else if (IN6_IS_ADDR_V4COMPAT(addr)) \
+        ifconfig->scope6 = SIGAR_IPV6_ADDR_COMPATv4; \
+    else if (IN6_IS_ADDR_LOOPBACK(addr)) \
+        ifconfig->scope6 = SIGAR_IPV6_ADDR_LOOPBACK; \
+    else \
+        ifconfig->scope6 = SIGAR_IPV6_ADDR_ANY
+
 int sigar_tcp_curr_estab(sigar_t *sigar, sigar_tcp_t *tcp);
 
 int sigar_who_list_create(sigar_who_list_t *wholist);
diff --git a/src/os/aix/aix_sigar.c b/src/os/aix/aix_sigar.c
index bac4491f..7fee1775 100644
--- a/src/os/aix/aix_sigar.c
+++ b/src/os/aix/aix_sigar.c
@@ -1507,6 +1507,12 @@ int sigar_net_interface_stat_get(sigar_t *sigar,
     }
 }
 
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig)
+{
+    return SIGAR_ENOTIMPL;
+}
+
 #define IS_TCP_SERVER(state, flags) \
     ((flags & SIGAR_NETCONN_SERVER) && (state == TCPS_LISTEN))
 
diff --git a/src/os/darwin/darwin_sigar.c b/src/os/darwin/darwin_sigar.c
index b60e0af1..eff6e1d1 100644
--- a/src/os/darwin/darwin_sigar.c
+++ b/src/os/darwin/darwin_sigar.c
@@ -2593,6 +2593,76 @@ int sigar_net_interface_list_get(sigar_t *sigar,
     return sigar_ifmsg_iter(sigar, &iter);
 }
 
+#include <ifaddrs.h>
+
+/* in6_prefixlen derived from freebsd/sbin/ifconfig/af_inet6.c */
+static int sigar_in6_prefixlen(struct sockaddr *netmask)
+{
+    struct in6_addr *addr = SIGAR_SIN6_ADDR(netmask);
+    u_char *name = (u_char *)addr;
+    int size = sizeof(*addr);
+    int byte, bit, plen = 0;
+
+    for (byte = 0; byte < size; byte++, plen += 8) {
+        if (name[byte] != 0xff) {
+            break;
+        }
+    }
+    if (byte == size) {
+        return plen;
+    }
+    for (bit = 7; bit != 0; bit--, plen++) {
+        if (!(name[byte] & (1 << bit))) {
+            break;
+        }
+    }
+    for (; bit != 0; bit--) {
+        if (name[byte] & (1 << bit)) {
+            return 0;
+        }
+    }
+    byte++;
+    for (; byte < size; byte++) {
+        if (name[byte]) {
+            return 0;
+        }
+    }
+    return plen;
+}
+
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig)
+{
+    int status = SIGAR_ENOENT;
+    struct ifaddrs *addrs, *ifa;
+
+    if (getifaddrs(&addrs) != 0) {
+        return errno;
+    }
+
+    for (ifa=addrs; ifa; ifa=ifa->ifa_next) {
+        if (ifa->ifa_addr &&
+            (ifa->ifa_addr->sa_family == AF_INET6) &&
+            strEQ(ifa->ifa_name, name))
+        {
+            status = SIGAR_OK;
+            break;
+        }
+    }
+
+    if (status == SIGAR_OK) {
+        struct in6_addr *addr = SIGAR_SIN6_ADDR(ifa->ifa_addr);
+
+        sigar_net_address6_set(ifconfig->address6, addr);
+        sigar_net_interface_scope6_set(ifconfig, addr);
+        ifconfig->prefix6_length = sigar_in6_prefixlen(ifa->ifa_netmask);
+    }
+
+    freeifaddrs(addrs);
+
+    return status;
+}
+
 int sigar_net_interface_config_get(sigar_t *sigar, const char *name,
                                    sigar_net_interface_config_t *ifconfig)
 {
@@ -2682,6 +2752,9 @@ int sigar_net_interface_config_get(sigar_t *sigar, const char *name,
     SIGAR_SSTRCPY(ifconfig->description,
                   ifconfig->name);
 
+    sigar_net_interface_ipv6_config_init(ifconfig);
+    sigar_net_interface_ipv6_config_get(sigar, name, ifconfig);
+
     return SIGAR_OK;
 }
 
diff --git a/src/os/hpux/hpux_sigar.c b/src/os/hpux/hpux_sigar.c
index 26fb314a..db1c0c5b 100644
--- a/src/os/hpux/hpux_sigar.c
+++ b/src/os/hpux/hpux_sigar.c
@@ -872,6 +872,12 @@ int sigar_net_interface_stat_get(sigar_t *sigar, const char *name,
     return SIGAR_OK;
 }
 
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig)
+{
+    return SIGAR_ENOTIMPL;
+}
+
 static int net_conn_get_udp_listen(sigar_net_connection_walker_t *walker)
 {
     sigar_t *sigar = walker->sigar;
diff --git a/src/os/linux/linux_sigar.c b/src/os/linux/linux_sigar.c
index a9325953..1d3a9e1e 100644
--- a/src/os/linux/linux_sigar.c
+++ b/src/os/linux/linux_sigar.c
@@ -2092,6 +2092,45 @@ static int sigar_net_connection_get(sigar_t *sigar,
     return status;
 }
 
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig)
+{
+    FILE *fp;
+    char addr[32+1], ifname[8+1];
+    int status = SIGAR_ENOENT;
+    int idx, prefix, scope, flags;
+
+    if (!(fp = fopen(PROC_FS_ROOT "net/if_inet6", "r"))) {
+        return errno;
+    }
+
+    while (fscanf(fp, "%32s %02x %02x %02x %02x %8s\n",
+                  addr, &idx, &prefix, &scope, &flags, ifname) != EOF)
+    {
+        if (strEQ(name, ifname)) {
+            status = SIGAR_OK;
+            break;
+        }
+    }
+
+    fclose(fp);
+
+    if (status == SIGAR_OK) {
+        int i=0;
+        unsigned char *addr6 = (unsigned char *)&(ifconfig->address6.addr.in6);
+        char *ptr = addr;
+
+        for (i=0; i<16; i++, ptr+=2) {
+            addr6[i] = (unsigned char)hex2int(ptr, 2);
+        }
+
+        ifconfig->prefix6_length = prefix;
+        ifconfig->scope6 = scope;
+    }
+
+    return status;
+}
+
 #define SNMP_TCP_PREFIX "Tcp: "
 
 SIGAR_DECLARE(int)
diff --git a/src/os/solaris/solaris_sigar.c b/src/os/solaris/solaris_sigar.c
index ca159ae6..17912d04 100644
--- a/src/os/solaris/solaris_sigar.c
+++ b/src/os/solaris/solaris_sigar.c
@@ -26,6 +26,7 @@
 #include <net/route.h>
 #include <sys/lwp.h>
 #include <sys/proc.h>
+#include <sys/sockio.h>
 #include <sys/swap.h>
 #include <sys/stat.h>
 #include <sys/systeminfo.h>
@@ -2083,6 +2084,30 @@ int sigar_net_interface_stat_get(sigar_t *sigar, const char *name,
     }
 }
 
+int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
+                                        sigar_net_interface_config_t *ifconfig)
+{
+    int sock;
+    struct lifreq lifr;
+
+    if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+        return errno;
+    }
+
+    SIGAR_SSTRCPY(lifr.lifr_name, name);
+
+    if (ioctl(sock, SIOCGLIFADDR, &lifr) == 0) {
+        struct in6_addr *addr = SIGAR_SIN6_ADDR(&lifr.lifr_addr);
+
+        sigar_net_address6_set(ifconfig->address6, addr);
+        sigar_net_interface_scope6_set(ifconfig, addr);
+        ifconfig->prefix6_length = lifr.lifr_addrlen;
+    }
+
+    close(sock);
+    return SIGAR_OK;
+}
+
 #define TCPQ_SIZE(s) ((s) >= 0 ? (s) : 0)
 
 static int tcp_connection_get(sigar_net_connection_walker_t *walker,
diff --git a/src/os/win32/win32_sigar.c b/src/os/win32/win32_sigar.c
index d395afe7..5eaeb274 100644
--- a/src/os/win32/win32_sigar.c
+++ b/src/os/win32/win32_sigar.c
@@ -21,6 +21,7 @@
 #include "sigar_pdh.h"
 #include "sigar_os.h"
 #include "sigar_util.h"
+#include "sigar_format.h"
 #include <shellapi.h>
 
 #define USING_WIDE_S(s) (s)->using_wide
@@ -2219,12 +2220,11 @@ static int sigar_get_adapter_info(sigar_t *sigar,
 }
 
 static int sigar_get_adapters_addresses(sigar_t *sigar,
+                                        ULONG family, ULONG flags,
                                         PIP_ADAPTER_ADDRESSES *addrs)
 {
     ULONG size = sigar->ifconf_len;
     ULONG rc;
-    ULONG flags = 
-        GAA_FLAG_SKIP_DNS_SERVER|GAA_FLAG_SKIP_MULTICAST;
 
     DLLMOD_INIT(iphlpapi, FALSE);
 
@@ -2233,7 +2233,7 @@ static int sigar_get_adapters_addresses(sigar_t *sigar,
     }
 
     *addrs = (PIP_ADAPTER_ADDRESSES)sigar->ifconf_buf;
-    rc = sigar_GetAdaptersAddresses(AF_UNSPEC,
+    rc = sigar_GetAdaptersAddresses(family,
                                     flags,
                                     NULL,
                                     *addrs,
@@ -2249,7 +2249,7 @@ static int sigar_get_adapters_addresses(sigar_t *sigar,
                                     sigar->ifconf_len);
 
         *addrs = (PIP_ADAPTER_ADDRESSES)sigar->ifconf_buf;
-        rc = sigar_GetAdaptersAddresses(AF_UNSPEC,
+        rc = sigar_GetAdaptersAddresses(family,
                                         flags,
                                         NULL,
                                         *addrs,
@@ -2637,6 +2637,42 @@ sigar_net_interface_list_get(sigar_t *sigar,
     return SIGAR_OK;
 }
 
+static int sigar_net_interface_ipv6_config_find(sigar_t *sigar, int index,
+                                                sigar_net_interface_config_t *ifconfig)
+{
+    int status;
+    PIP_ADAPTER_ADDRESSES aa, addrs;
+    ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
+
+    status = sigar_get_adapters_addresses(sigar, AF_UNSPEC, flags, &aa);
+
+    if (status != SIGAR_OK) {
+        return status;
+    }
+
+    for (addrs = aa; addrs; addrs = addrs->Next) {
+        PIP_ADAPTER_UNICAST_ADDRESS addr;
+        if (addrs->IfIndex != index) {
+            continue;
+        }
+        for (addr = addrs->FirstUnicastAddress; addr; addr = addr->Next) {
+            struct sockaddr *sa = addr->Address.lpSockaddr;
+
+            if (sa->sa_family == AF_INET6) {
+                struct in6_addr *inet6 = SIGAR_SIN6_ADDR(sa);
+
+                sigar_net_address6_set(ifconfig->address6, inet6);
+                sigar_net_interface_scope6_set(ifconfig, inet6);
+                if (addrs->FirstPrefix) {
+                    ifconfig->prefix6_length = addrs->FirstPrefix->PrefixLength;
+                }
+                return SIGAR_OK;
+            }
+        }
+    }
+    return SIGAR_ENOENT;
+}
+
 SIGAR_DECLARE(int)
 sigar_net_interface_config_get(sigar_t *sigar,
                                const char *name,
@@ -2717,6 +2753,9 @@ sigar_net_interface_config_get(sigar_t *sigar,
                       SIGAR_NIC_ETHERNET);
     }
 
+    sigar_net_interface_ipv6_config_init(ifconfig);
+    sigar_net_interface_ipv6_config_find(sigar, ifr->dwIndex, ifconfig);
+
     return SIGAR_OK;
 }
 
diff --git a/src/sigar.c b/src/sigar.c
index 46f09b15..114c98b5 100644
--- a/src/sigar.c
+++ b/src/sigar.c
@@ -1642,6 +1642,9 @@ int sigar_net_interface_config_get(sigar_t *sigar, const char *name,
     SIGAR_SSTRCPY(ifconfig->description,
                   ifconfig->name);
 
+    sigar_net_interface_ipv6_config_init(ifconfig);
+    sigar_net_interface_ipv6_config_get(sigar, name, ifconfig);
+
     return SIGAR_OK;
 }
 
diff --git a/src/sigar_format.c b/src/sigar_format.c
index f7642c4a..5aab7eb2 100644
--- a/src/sigar_format.c
+++ b/src/sigar_format.c
@@ -353,7 +353,26 @@ SIGAR_DECLARE(int) sigar_net_address_equals(sigar_net_address_t *addr1,
     }
 }
 
-#if !defined(WIN32) && !defined(NETWARE) && !defined(__hpux)
+#if defined(WIN32)
+static char *sigar_inet_ntop(int af, const void *src, char *dst, int cnt)
+{
+    struct sockaddr_in6 sa; /* note only using this for AF_INET6 */
+
+    memset(&sa, '\0', sizeof(sa));
+    sa.sin6_family = af;
+    memcpy(&sa.sin6_addr, src, sizeof(sa.sin6_addr));
+
+    if (getnameinfo((struct sockaddr *)&sa, sizeof(sa),
+                    dst, cnt, NULL, 0, NI_NUMERICHOST))
+    {
+        return NULL;
+    }
+    else {
+        return dst;
+    }
+}
+#define sigar_inet_ntop_errno GetLastError()
+#elif !defined(NETWARE) && !defined(__hpux)
 #define sigar_inet_ntop inet_ntop
 #define sigar_inet_ntop_errno errno
 #else
@@ -365,6 +384,7 @@ SIGAR_DECLARE(int) sigar_net_address_to_string(sigar_t *sigar,
                                                sigar_net_address_t *address,
                                                char *addr_str)
 {
+    *addr_str = '\0';
     switch (address->family) {
       case SIGAR_AF_INET6:
         if (sigar_inet_ntop(AF_INET6, (const void *)&address->addr.in6,