diff --git a/src/etc/inc/filter.lib.inc b/src/etc/inc/filter.lib.inc
index 3733cba5e..0d9f2427d 100644
--- a/src/etc/inc/filter.lib.inc
+++ b/src/etc/inc/filter.lib.inc
@@ -393,19 +393,21 @@ function filter_core_rules_system($fw, $defaults)
                 break;
             case "dhcp":
                 $fw->registerFilterRule(
-                    5,
-                    array('protocol' => 'udp', 'direction' => 'in', 'quick' => false, 'from_port' => 67, 'to_port' => 68,
-                        '#ref' => "interfaces.php?if=" . $intf . "#type",
-                        'interface' => $intf, 'descr' => 'allow DHCP client on ' . $intfinfo['descr']),
-                    $defaults['pass']
-                );
-                $fw->registerFilterRule(
-                    5,
-                    array('protocol' => 'udp', 'direction' => 'out', 'quick' => false, 'from_port' => 68, 'to_port' => 67,
+                    1,
+                    array('protocol' => 'udp', 'direction' => 'in', 'from_port' => 67, 'to_port' => 68,
                         '#ref' => "interfaces.php?if=" . $intf . "#type",
                         'interface' => $intf, 'descr' => 'allow DHCP client on ' . $intfinfo['descr']),
                     $defaults['pass']
                 );
+                $dhcpv4_opts = [
+                    'protocol' => 'udp','direction' => 'out', 'from_port' => 68, 'to_port' => 67,
+                    '#ref' => "interfaces.php?if=" . $intf . "#type",
+                    'interface' => $intf, 'descr' => 'allow DHCP client on ' . $intfinfo['descr'],
+                ];
+                if (isset($intfinfo['dhcpvlanprio'])) {
+                     $dhcpv4_opts['set-prio'] = $intfinfo['dhcpvlanprio'];
+                }
+                $fw->registerFilterRule(1, $dhcpv4_opts, $defaults['pass']);
                 break;
             default:
                 if (isset($config['dhcpd'][$intf]['enable'])) {
diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index 6bd2b821c..72c0546dc 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -3149,6 +3149,10 @@ EOD;
         $dhclientconf .= "  reject {$wancfg['dhcprejectfrom']};\n";
     }
 
+    if (isset($wancfg['dhcpvlanprio'])) {
+        $dhclientconf .= "  vlan-pcp {$wancfg['dhcpvlanprio']};\n";
+    }
+
     $dhclientconf .= "}\n";
 
     // DHCP Config File Advanced
@@ -3255,6 +3259,9 @@ function DHCP_Config_File_Advanced($interface, $wancfg, $wanif)
     if (is_ipaddrv4($wancfg['dhcprejectfrom'])) {
         $dhclientconf .= "\treject {$wancfg['dhcprejectfrom']};\n";
     }
+    if (isset($wancfg['dhcpvlanprio'])) {
+        $dhclientconf .= "\tvlan-pcp {$wancfg['dhcpvlanprio']};\n";
+    }
     $dhclientconf .= "}\n";
 
     $dhclientconf = DHCP_Config_File_Substitutions($wancfg, $wanif, $dhclientconf);
diff --git a/src/www/interfaces.php b/src/www/interfaces.php
index c69b07891..a58e14133 100644
--- a/src/www/interfaces.php
+++ b/src/www/interfaces.php
@@ -395,6 +395,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
         'dhcp6vlanprio',
         'dhcphostname',
         'dhcprejectfrom',
+        'dhcpvlanprio',
         'disablechecksumoffloading',
         'disablelargereceiveoffloading',
         'disablesegmentationoffloading',
@@ -1073,6 +1074,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
                     if (empty($pconfig['dhcpoverridemtu'])) {
                         $new_config['dhcphonourmtu'] = true;
                     }
+                    if (isset($pconfig['dhcpvlanprio']) && $pconfig['dhcpvlanprio'] !== '') {
+                        $new_config['dhcpvlanprio'] = $pconfig['dhcpvlanprio'];
+                    }
                     break;
                 case "ppp":
                     $new_config['if'] = $pconfig['type'] . $pconfig['ptpid'];
@@ -2302,6 +2306,22 @@ include("head.inc");
                             </div>
                           </td>
                         </tr>
+                        <tr class="dhcp_basic dhcp_advanced">
+                          <td><a id="help_for_dhcpvlanprio" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?= gettext('Use VLAN priority') ?></td>
+                          <td>
+                            <select name="dhcpvlanprio">
+                              <option value="" <?= "{$pconfig['dhcpvlanprio']}" === '' ? 'selected="selected"' : '' ?>><?= gettext('Disabled') ?></option>
+<?php
+                              foreach (interfaces_vlan_priorities() as $pcp => $priority): ?>
+                              <option value="<?= html_safe($pcp) ?>" <?= "{$pconfig['dhcpvlanprio']}" === "$pcp" ? 'selected="selected"' : '' ?>><?= htmlspecialchars($priority) ?></option>
+<?php
+                              endforeach ?>
+                            </select>
+                            <div class="hidden" data-for="help_for_dhcpvlanprio">
+                              <?= gettext('Certain ISPs may require that DHCPv4 requests are sent with a specific VLAN priority.') ?>
+                            </div>
+                          </td>
+                        </tr>
                         <tr class="dhcp_advanced">
                           <td><a id="help_for_dhcpprotocol_timing" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Protocol Timing"); ?></td>
                           <td>