{"id":2092,"date":"2026-01-04T10:13:08","date_gmt":"2026-01-04T10:13:08","guid":{"rendered":"https:\/\/www.thebigbluehouse.org\/site\/?p=2092"},"modified":"2026-01-12T10:59:25","modified_gmt":"2026-01-12T10:59:25","slug":"configuring-dhcp-option-43-on-pfsense-kea-dhcp-for-unifi-device-discovery","status":"publish","type":"post","link":"https:\/\/www.thebigbluehouse.org\/site\/configuring-dhcp-option-43-on-pfsense-kea-dhcp-for-unifi-device-discovery\/","title":{"rendered":"Configuring DHCP Option 43 on pfSense (KEA DHCP) for UniFi Device Discovery"},"content":{"rendered":"\n<p>When running <a href=\"http:\/\/ui.com\">UniFi<\/a> access points without Layer-2 adoption, DHCP Option 43 allows your UniFi devices to automatically discover the UniFi Network Controller. With <a href=\"https:\/\/www.pfsense.org\/\">pfSense<\/a> now using <strong><a href=\"https:\/\/www.isc.org\/kea\/\">KEA DHCP<\/a><\/strong> by default, the configuration is slightly different from the <a href=\"https:\/\/www.thebigbluehouse.org\/site\/configuring-pfsense-for-unifi-dhcp-discovery\/\">legacy ISC DHCP<\/a> approach.<\/p>\n\n\n\n<p>This guide walks through enabling <strong>Option 43<\/strong> on pfSense using KEA DHCP so UniFi devices can successfully locate your controller.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prerequisites<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>pfSense with <strong>KEA DHCP<\/strong> enabled<\/li>\n\n\n\n<li>UniFi Network Controller reachable on your network<\/li>\n\n\n\n<li>UniFi devices receiving DHCP from pfSense<\/li>\n\n\n\n<li>Access to the pfSense web interface<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: Open the KEA DHCP Server Settings<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Log in to your <strong>pfSense management interface<\/strong><\/li>\n\n\n\n<li>From the top menu, navigate to:<br><strong>Services \u2192 DHCP Server<\/strong> <strong>\u2192 General Settings<\/strong> <\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2: Define DHCP Option 43 (Custom Configuration)<\/h2>\n\n\n\n<p>Under:<\/p>\n\n\n\n<p><strong>Custom KEA Configuration<\/strong><\/p>\n\n\n\n<p>Add the following JSON configuration to define Option 43 for UniFi:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"option-def\": &#91;\n    {\n      \"code\": 43,\n      \"name\": \"unificontroller\",\n      \"space\": \"dhcp4\",\n      \"type\": \"binary\"\n    }\n  ]\n}\n<\/code><\/pre>\n\n\n\n<p>This creates a custom DHCP option named <code>unificontroller<\/code> using Option 43 with a binary payload, which is required by UniFi devices.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"335\" data-attachment-id=\"2096\" data-permalink=\"https:\/\/www.thebigbluehouse.org\/site\/configuring-dhcp-option-43-on-pfsense-kea-dhcp-for-unifi-device-discovery\/screenshot2026-01-04at10-14-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?fit=1024%2C536&amp;ssl=1\" data-orig-size=\"1024,536\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Image Of Custom Config KEA\" data-image-description=\"&lt;p&gt;Image Of Custom Config KEA&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Image Of Custom Config KEA&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?fit=640%2C335&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?resize=640%2C335&#038;ssl=1\" alt=\"Image Of Custom Config KEA\" class=\"wp-image-2096\" srcset=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?w=1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?resize=300%2C157&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?resize=768%2C402&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.1.jpeg?resize=850%2C445&amp;ssl=1 850w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Image Of Custom Config KEA<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">Step 3: Select the Correct VLAN \/ Interface<\/h2>\n\n\n\n<p>Back on the <strong>DHCP Server<\/strong> page:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Select the <strong>management VLAN<\/strong> where your UniFi devices are connected<\/li>\n\n\n\n<li>This is typically the <strong>untagged\/native VLAN<\/strong> used by your access points<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4: Configure the UniFi Option 43 Data<\/h2>\n\n\n\n<p>Scroll to the bottom of the DHCP Server page and add a <strong>new Custom Configuration<\/strong> with the following structure:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"option-data\": &#91;\n    {\n      \"data\": \"0104xxxxxxxx\",\n      \"name\": \"unificontroller\"\n    }\n  ]\n}\n<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"522\" data-attachment-id=\"2098\" data-permalink=\"https:\/\/www.thebigbluehouse.org\/site\/configuring-dhcp-option-43-on-pfsense-kea-dhcp-for-unifi-device-discovery\/screenshot2026-01-04at10-14-5\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?fit=1024%2C835&amp;ssl=1\" data-orig-size=\"1024,835\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"KEA Configuring DHCP On The VLAN\" data-image-description=\"&lt;p&gt;KEA Configuring DHCP On The VLAN&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;KEA Configuring DHCP On The VLAN&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?fit=640%2C522&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?resize=640%2C522&#038;ssl=1\" alt=\"KEA Configuring DHCP On The VLAN\" class=\"wp-image-2098\" srcset=\"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?w=1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?resize=300%2C245&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?resize=768%2C626&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/Screenshot2026-01-04at10.14.5.jpeg?resize=850%2C693&amp;ssl=1 850w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">KEA Configuring DHCP On The VLAN<\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Converting Your UniFi Controller IP Address to HEX<\/h3>\n\n\n\n<p>The <code>data<\/code> field requires your UniFi controller IP address encoded in hexadecimal format.<\/p>\n\n\n\n<p>For example, if your UniFi controller IP is: <code>192.168.1.150<\/code><\/p>\n\n\n\n<p>The hexadecimal conversion is: <code>C0A80196<\/code><\/p>\n\n\n\n<p>You can use online tools such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"http:\/\/miniwebtool.com\">miniwebtool.com<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"http:\/\/onlinehextools.com\">onlinehextools.com<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<p>Once converted, prepend <code>0104<\/code> to the HEX value: <code>0104C0A80196<\/code><br><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&#x26a0;&#xfe0f; <strong>Important Note for Migrating Users<\/strong><br>This format is slightly different from older ISC DHCP configurations, which required the value to be split into two-digit blocks. KEA DHCP expects a continuous HEX string.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5: Save and Apply<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Save the DHCP configuration<\/li>\n\n\n\n<li>Restart the DHCP service if prompted<\/li>\n<\/ul>\n\n\n\n<p>Your UniFi devices should now automatically discover and connect to the UniFi Network Controller during DHCP assignment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Final Thoughts<\/h2>\n\n\n\n<p>Using DHCP Option 43 with KEA DHCP on pfSense is straightforward once you understand the binary formatting requirements. This method is especially useful for environments where DNS or Layer-2 discovery isn\u2019t feasible.<\/p>\n\n\n\n<p>If your UniFi devices don\u2019t immediately appear, try rebooting them or forcing a DHCP renew.<\/p>\n\n\n\n<p>Happy networking!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When running UniFi access points without Layer-2 adoption, DHCP Option 43 allows your UniFi devices to automatically discover the UniFi Network Controller. With pfSense now using KEA DHCP by default, the configuration is slightly different from the legacy ISC DHCP approach.<\/p>\n<p>This guide walks through enabling Option 43 on pfSense using KEA DHCP so UniFi devices can successfully locate your controller.<\/p>\n","protected":false},"author":1,"featured_media":2094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[392,393,412,414],"tags":[409,441,410,405],"class_list":["post-2092","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-itandcomputing","category-networking","category-pfsense","category-unifi","tag-dhcp","tag-kea","tag-pfsense","tag-unifi"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2026\/01\/unifi-switch.jpeg?fit=1940%2C930&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2jmMR-xK","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1478,"url":"https:\/\/www.thebigbluehouse.org\/site\/configuring-pfsense-for-unifi-dhcp-discovery\/","url_meta":{"origin":2092,"position":0},"title":"Configuring PFSense for UniFi DHCP Discovery","author":"Tom Davison","date":"15 October, 2022","format":false,"excerpt":"There are several ways for getting your UniFi devices adopted by your UniFi Controller, when the software is running in a different subnet. This article will cover DHCP, DNS and SSH options, the pros and cons, and how I have DHCP setup with PFSence","rel":"","context":"In &quot;IT and Computing&quot;","block_context":{"text":"IT and Computing","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/"},"img":{"alt_text":"UniFi Switches","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/unifi-sm.jpeg?fit=1200%2C600&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/unifi-sm.jpeg?fit=1200%2C600&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/unifi-sm.jpeg?fit=1200%2C600&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/unifi-sm.jpeg?fit=1200%2C600&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/unifi-sm.jpeg?fit=1200%2C600&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1476,"url":"https:\/\/www.thebigbluehouse.org\/site\/installing-unifi-controller-on-synology-as-a-docker-container\/","url_meta":{"origin":2092,"position":1},"title":"Installing UniFi Controller on Synology as a Docker Container","author":"Tom Davison","date":"3 November, 2022","format":false,"excerpt":"Instructions and Guide to install the Docker package on a Synology NAS to run your UniFi network hardware using a containerised version of the Controller software.","rel":"","context":"In &quot;Docker&quot;","block_context":{"text":"Docker","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/docker\/"},"img":{"alt_text":"Container Ship","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-sm.jpeg?fit=1200%2C621&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-sm.jpeg?fit=1200%2C621&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-sm.jpeg?fit=1200%2C621&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-sm.jpeg?fit=1200%2C621&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-sm.jpeg?fit=1200%2C621&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1482,"url":"https:\/\/www.thebigbluehouse.org\/site\/upgrading-unifi-controller-synology-docker-containers\/","url_meta":{"origin":2092,"position":2},"title":"Upgrade A UniFi Controller Synology Docker Containers","author":"Tom Davison","date":"13 November, 2022","format":false,"excerpt":"This guide shows you how to upgrade a docker container on synology (specifically updating the UniFi Controller), while ensuring the new container 'takes' the network ports of the old container.","rel":"","context":"In &quot;Docker&quot;","block_context":{"text":"Docker","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/docker\/"},"img":{"alt_text":"Ship In Dock","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-upgrade-sm.webp?fit=1200%2C581&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-upgrade-sm.webp?fit=1200%2C581&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-upgrade-sm.webp?fit=1200%2C581&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-upgrade-sm.webp?fit=1200%2C581&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/docker-upgrade-sm.webp?fit=1200%2C581&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1694,"url":"https:\/\/www.thebigbluehouse.org\/site\/unifi-firmware-updates-using-a-local-cache\/","url_meta":{"origin":2092,"position":3},"title":"UniFi Firmware Updates Using A Local Cache","author":"Tom Davison","date":"13 December, 2022","format":false,"excerpt":"I tried to do a firmware upgrade on my UniFi Access points, but one AP failed. Here is how I resolved this using a Local Cache.","rel":"","context":"In &quot;IT and Computing&quot;","block_context":{"text":"IT and Computing","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/"},"img":{"alt_text":"AP Firmware Upgrade Header Image","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/12\/ap-firmware-upgrade.webp?fit=1200%2C583&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/12\/ap-firmware-upgrade.webp?fit=1200%2C583&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/12\/ap-firmware-upgrade.webp?fit=1200%2C583&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/12\/ap-firmware-upgrade.webp?fit=1200%2C583&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/12\/ap-firmware-upgrade.webp?fit=1200%2C583&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1480,"url":"https:\/\/www.thebigbluehouse.org\/site\/adding-dns-entries-in-pfsense\/","url_meta":{"origin":2092,"position":4},"title":"Adding DNS entries in PFSense","author":"Tom Davison","date":"20 October, 2022","format":false,"excerpt":"This guide isn't anything more complex than showing how I setup custom DNS entries within my lab environment using PFSense. I like to access certain services with a Fully Qualified Domain Name (FQDN). This is mostly to allow me to access those systems using a name rather than IP address\u2026","rel":"","context":"In &quot;IT and Computing&quot;","block_context":{"text":"IT and Computing","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/"},"img":{"alt_text":"Laptop Padlock","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/dns-sm.jpeg?fit=1200%2C621&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/dns-sm.jpeg?fit=1200%2C621&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/dns-sm.jpeg?fit=1200%2C621&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/dns-sm.jpeg?fit=1200%2C621&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2022\/10\/dns-sm.jpeg?fit=1200%2C621&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1816,"url":"https:\/\/www.thebigbluehouse.org\/site\/openvpn-fix-after-upgrading-to-pfsense-23-01\/","url_meta":{"origin":2092,"position":5},"title":"OpenVPN Fix after upgrading to pfSense 23.01","author":"Tom Davison","date":"1 March, 2023","format":false,"excerpt":"This article describes how to fix the pfSense Firewall 23.01 error Cannot open TUN\/TAP dev \/dev\/tun1: No such file or directory (errno=2)","rel":"","context":"In &quot;IT and Computing&quot;","block_context":{"text":"IT and Computing","link":"https:\/\/www.thebigbluehouse.org\/site\/category\/itandcomputing\/"},"img":{"alt_text":"Firewall Upgrade - Image of wall and fire escape ladders","src":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2023\/02\/FirewallUpgrade.jpeg?fit=1200%2C583&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2023\/02\/FirewallUpgrade.jpeg?fit=1200%2C583&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2023\/02\/FirewallUpgrade.jpeg?fit=1200%2C583&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2023\/02\/FirewallUpgrade.jpeg?fit=1200%2C583&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.thebigbluehouse.org\/site\/wp-content\/uploads\/2023\/02\/FirewallUpgrade.jpeg?fit=1200%2C583&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/posts\/2092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/comments?post=2092"}],"version-history":[{"count":8,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/posts\/2092\/revisions"}],"predecessor-version":[{"id":2115,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/posts\/2092\/revisions\/2115"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/media\/2094"}],"wp:attachment":[{"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/media?parent=2092"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/categories?post=2092"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thebigbluehouse.org\/site\/wp-json\/wp\/v2\/tags?post=2092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}