--- title: "Adding a backup Internet WAN on my OPNsense Router" url: https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm source_url: https://www.jeffgeerling.com/blog/2026/opnsense-backup-internet-gateway type: article source: "Jeff Geerling" published: 2026-07-24T14:25:30.468Z updated: 2026-07-24T16:00:12.786Z tags: ["tech-news", "networking"] reading_time: 3 upvotes: 1 comments: 0 language: 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 --- 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)