From 7be23d53705ccbcee64d3236bf74b34c513da686 Mon Sep 17 00:00:00 2001
From: marjohn56 <martin@queens-park.com>
Date: Wed, 21 Dec 2016 15:26:17 +0000
Subject: User Defined DUID

User may define a DUID to use in System->Advanced->Networking. The
entered DUID is validated for composition and length, if valid it is
stored in the config.xml. On call of wan_dhcp6_configure() the DUID is
written to file to be read by dhcp6c on launch.
---
 src/usr/local/www/system_advanced_network.php | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/usr/local/www/system_advanced_network.php')

diff --git a/src/usr/local/www/system_advanced_network.php b/src/usr/local/www/system_advanced_network.php
index 06a4e2d..b453045 100644
--- a/src/usr/local/www/system_advanced_network.php
+++ b/src/usr/local/www/system_advanced_network.php
@@ -40,6 +40,7 @@ require_once("shaper.inc");
 $pconfig['ipv6nat_enable'] = isset($config['diag']['ipv6nat']['enable']);
 $pconfig['ipv6nat_ipaddr'] = $config['diag']['ipv6nat']['ipaddr'];
 $pconfig['ipv6allow'] = isset($config['system']['ipv6allow']);
+$pconfig['global-v6duid'] = $config['system']['global-v6duid'];
 $pconfig['prefer_ipv4'] = isset($config['system']['prefer_ipv4']);
 $pconfig['sharednet'] = $config['system']['sharednet'];
 $pconfig['disablechecksumoffloading'] = isset($config['system']['disablechecksumoffloading']);
@@ -83,6 +84,18 @@ if ($_POST) {
 			unset($config['system']['prefer_ipv4']);
 		}
 
+		if (!empty($_POST['global-v6duid'])) {
+			$_POST['global-v6duid'] = strtolower(str_replace("-", ":", $_POST['global-v6duid']));
+			if (!is_duid($_POST['global-v6duid'])) {
+				$input_errors[] = gettext("A valid DUID must be specified");
+			} else {
+				$config['system']['global-v6duid'] = $_POST['global-v6duid'];
+			}
+		}
+		else {
+			unset($config['system']['global-v6duid']);
+		}
+
 		if ($_POST['sharednet'] == "yes") {
 			$config['system']['sharednet'] = true;
 			system_disable_arp_wrong_if();
@@ -186,6 +199,15 @@ $section->addInput(new Form_Checkbox(
 ))->setHelp('By default, if IPv6 is configured and a hostname resolves IPv6 and IPv4 addresses, '. 
 	'IPv6 will be used. If this option is selected, IPv4 will be preferred over IPv6.');
 
+$section->addInput(new Form_Input(
+	'global-v6duid',
+	'DHCP6 DUID',
+	'text',
+	$pconfig['global-v6duid'],
+	['placeholder' => 'xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx']
+	))->setWidth(9)->sethelp('Enter the DUID to use here. Use this option if using RAM Disk, as the DUID will be lost on reboot. The existing DUID may be found in var/db/dhcp6_duid.' .'<br />' .
+			'NOTE: Do not use this option with multiple DHCP6 interfaces.');
+
 $form->add($section);
 $section = new Form_Section('Network Interfaces');
 
-- 
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