--- title: Adding a backup Internet WAN on my OPNsense Router description: A practical walkthrough for configuring a backup WAN interface on an OPNsense router using a 5G gateway as a secondary connection. Covers assigning a new... canonical: https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Adding a backup Internet WAN on my OPNsense Router | daily.dev og:description: A practical walkthrough for configuring a backup WAN interface on an OPNsense router using a 5G gateway as a secondary connection. Covers assigning a new... og:url: https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm og:image: https://api.daily.dev/og/posts/a7GBniplm.png og:image:alt: Adding a backup Internet WAN on my OPNsense Router og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Adding a backup Internet WAN on my OPNsense Router **[Jeff Geerling](https://daily.dev/sources/jeffgeerling)** · 3 min read · 1 upvotes · 0 comments ## Summary A practical walkthrough for configuring a backup WAN interface on an OPNsense router using a 5G gateway as a secondary connection. Covers assigning a new interface (WAN2), enabling DHCP, verifying the gateway appears in System > Gateways, and manually switching between WAN connections by adjusting gateway priorities. Also touches on outbound NAT configuration and using curl or fast.com to verify which connection is active. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [My two ISPs don't know about each other, and my router makes that fine](https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb) · XDA Developers · 0 upvotes · 1 comments - [This old Galaxy phone became my third WAN port, and it actually works](https://daily.dev/posts/this-old-galaxy-phone-became-my-third-wan-port-and-it-actually-works-ul7hztm05) · XDA Developers · 0 upvotes · 0 comments --- Tags: [#tech-news](https://daily.dev/tags/tech-news), [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Adding a backup Internet WAN on my OPNsense Router","url":"https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm"},"datePublished":"2026-07-24T14:25:30.468Z","dateModified":"2026-07-24T16:00:12.786Z","description":"A practical walkthrough for configuring a backup WAN interface on an OPNsense router using a 5G gateway as a secondary connection. 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