diff --git a/bin/asstatd.pl b/bin/asstatd.pl
index fc1b05c..af6e5dd 100755
--- a/bin/asstatd.pl
+++ b/bin/asstatd.pl
@@ -7,6 +7,7 @@
 
 use strict;
 use 5.010;
+use Socket qw(AF_INET6 inet_pton inet_ntop);
 use IO::Select;
 use IO::Socket;
 use RRDs;
@@ -77,7 +78,7 @@ if ($sflow_server_port == $server_port) {
 }
 
 my %myas;
-if($sflow_server_port > 0){
+if($sflow_server_port > 0 || defined($myas_opt)){
 	die('No ASN found, please specify -a') if !defined($myas_opt);
 	%myas = map {$_ => 1 } split(',', $myas_opt);
 	for my $i (%myas){
@@ -306,6 +307,7 @@ sub parse_netflow_v9_data_flowset {
 	while (($ofs + $len) <= $datalen) {
 		# Interpret values according to template
 		my ($inoctets, $outoctets, $srcas, $dstas, $snmpin, $snmpout, $ipversion, $vlanin, $vlanout);
+                my ($srcip, $dstip);
 
 		$inoctets = 0;
 		$outoctets = 0;
@@ -356,7 +358,11 @@ sub parse_netflow_v9_data_flowset {
 				}
 			} elsif ($cur_fldtype == 60) {	# IP_PROTOCOL_VERSION
 				$ipversion = unpack("C", $cur_fldval);
-			} elsif ($cur_fldtype == 27 || $cur_fldtype == 28) {	# IPV6_SRC_ADDR/IPV6_DST_ADDR
+			} elsif ($cur_fldtype == 27) {	# IPV6_SRC_ADDR
+                                $srcip = inet_ntop(AF_INET6, $cur_fldval);
+				$ipversion = 6;
+			} elsif ($cur_fldtype == 28) {	# IPV6_DST_ADDR
+                                $dstip = inet_ntop(AF_INET6, $cur_fldval);
 				$ipversion = 6;
 			} elsif ($cur_fldtype == 58) {  # SRC_VLAN
 				$vlanin = unpack("n", $cur_fldval);
@@ -365,7 +371,16 @@ sub parse_netflow_v9_data_flowset {
 			}
 		}
 	
-		if (defined($srcas) && defined($dstas) && defined($snmpin) && defined($snmpout)) {
+		if (defined($snmpin) && defined($snmpout)) {
+                        if (not (defined($srcas))) { $srcas=0; }
+                        if (not (defined($dstas))) { $dstas=0; }
+                        if ($srcas == 0 && $dstas == 0 && $ipversion == 6 && defined($srcip) && defined($dstip)) {
+                                $srcas = replace_asn($srcip, $srcas);
+                                $dstas = replace_asn($dstip, $dstas);
+                                # substitute 0 for own AS number
+                                if ($myas{$srcas}) { $srcas = 0; }
+                                if ($myas{$dstas}) { $dstas = 0; }
+                        }
 			handleflow($ipaddr, $inoctets + $outoctets, $srcas, $dstas, $snmpin, $snmpout, $ipversion, 'netflow', $vlanin, $vlanout);
 		}
 	}
diff --git a/www/func.inc b/www/func.inc
index 4cbcd93..a11b23c 100644
--- a/www/func.inc
+++ b/www/func.inc
@@ -238,7 +238,11 @@ function getHTMLImg($as, $ipversion, $desc, $start, $end, $peerusage, $alt, $cla
 	global $top_graph_width;
 	global $top_graph_height;
 
-	$dname = rawurlencode("AS$as - $desc - IPV$ipversion");
+        $ipvstring = "$ipversion";
+        if($ipversion == 0 || $ipversion == 46 || $ipversion == 64)
+                $ipvstring = "4+IPv6";
+
+	$dname = rawurlencode("AS$as - $desc - IPv$ipvstring");
 
 	$result = "<img alt='$alt' class='$class' src='gengraph.php?v=$ipversion&as=$as&peerusage=$peerusage&dname=$dname&start=$start&end=$end";
 	if(!$history)
diff --git a/www/gengraph.php b/www/gengraph.php
index a2d7f68..3a26702 100644
--- a/www/gengraph.php
+++ b/www/gengraph.php
@@ -22,7 +22,12 @@ if (isset($_GET['height']))
 $v6_el = "";
 if (@$_GET['v'] == 6)
 	$v6_el = "v6_";
-
+$mixv4v6 = false;
+$versionstring = @$_GET['v'];
+if (@$_GET['v'] == 0 || @$_GET['v'] == 10 || @$_GET['v'] == 46 || @$_GET['v'] == 64) {
+        $mixv4v6 = true;
+        $versionstring = '4 + IPv6';
+}
 if(isset($_GET['peerusage']) && $_GET['peerusage'] == '1')
 	$peerusage = 1;
 else
@@ -46,6 +51,18 @@ if(isset($_GET['selected_links'])){
 	$knownlinks = $links;
 }
 
+if ($mixv4v6) {
+    $v6links = array();
+    foreach ($knownlinks as $v4link) {
+                    $tag6 = $v4link['tag']."_v6";
+                    $link = array('tag' => $tag6,
+                                    'color' => $v4link['color'],
+                                    'descr' => $v4link['descr']);
+                    $v6links[] = $link;
+    }
+    $knownlinks = array_merge($knownlinks, $v6links);
+}
+
 $rrdfile = getRRDFileForAS($as, $peerusage);
 
 if ($compat_rrdtool12) {
@@ -74,7 +91,7 @@ if($showtitledetail && @$_GET['dname'] != "")
 	$cmd .= "--title " . escapeshellarg($_GET['dname']) . " ";
 else
 	if (isset($_GET['v']) && is_numeric($_GET['v']))
-		$cmd .= "--title IPv" . $_GET['v'] . " ";
+		$cmd .= "--title IPv" . $versionstring . " ";
 
 if (isset($_GET['nolegend']))
 	$cmd .= "--no-legend ";
diff --git a/www/top.php b/www/top.php
index 9269495..839078f 100644
--- a/www/top.php
+++ b/www/top.php
@@ -19,6 +19,12 @@ $hours = 24;
 if (@$_GET['numhours'])
 	$hours = (int)$_GET['numhours'];
 
+$mixv4v6 = false;
+if (isset($_GET['mixv4v6'])) {
+    $mixv4v6 = $_GET['mixv4v6'];
+    $showv6 = false;
+}
+
 if ($peerusage)
 	$statsfile = $daypeerstatsfile;
 else {
@@ -82,10 +88,14 @@ $class = (($i % 2) == 0) ? "even" : "odd";
 		</div>
 		<div class="small">IPv4: ~ <?php echo format_bytes($nbytes[0]); ?> in / 
 			<?php echo format_bytes($nbytes[1]); ?> out in the last <?php echo $label?></div>
-		<?php if ($showv6): ?>
+		<?php if ($showv6 || $mixv4v6): ?>
 		<div class="small">IPv6: ~ <?php echo format_bytes($nbytes[2]); ?> in / 
 			<?php echo format_bytes($nbytes[3]); ?> out in the last <?php echo $label?></div>
 		<?php endif; ?>
+		<?php if ($mixv4v6): ?>
+		<div class="small">Total: ~ <?php echo format_bytes($nbytes[0]+$nbytes[2]); ?> in / 
+			<?php echo format_bytes($nbytes[1]+$nbytes[3]); ?> out in the last <?php echo $label?></div>
+		<?php endif; ?>
 
 <?php if (!empty($customlinks)): ?>
 		<div class="customlinks">
@@ -106,7 +116,11 @@ echo join(" | ", $htmllinks);
 	</th>
 	<td>
 		<?php
-		echo getHTMLUrl($as, 4, $asinfo['descr'], $start, $end, $peerusage, $selected_links);
+                if ($mixv4v6) {
+                    echo getHTMLUrl($as, 0, $asinfo['descr'], $start, $end, $peerusage, $selected_links);
+                } else {
+                    echo getHTMLUrl($as, 4, $asinfo['descr'], $start, $end, $peerusage, $selected_links);
+                }
 		if ($showv6)
 			echo getHTMLUrl($as, 6, $asinfo['descr'], $start, $end, $peerusage, $selected_links);
 		?>
@@ -120,6 +134,7 @@ echo join(" | ", $htmllinks);
 <form method='get'>
 <input type='hidden' name='numhours' value='<?php echo $hours; ?>'/>
 <input type='hidden' name='n' value='<?php echo $ntop; ?>'/>
+<input type="checkbox" name="mixv4v6" value="true" <?php if($mixv4v6) echo 'checked'; ?>>Add v4+v6</input>
 <table>
 <?php
 $knownlinks = getknownlinks();