Preventing double NAT — by mk24 on OpenWrt Forum

advancedforumLink only (©)

A way to keep two routers without double NAT: reserve the OpenWrt router's address on the upstream router, add a route to OpenWrt's LAN via that address, and untick masquerading on OpenWrt's WAN zone.

Quick steps

Create a DHCP reservation on the upstream router
Add a route for 192.168.1.0/24 via that reserved IP
On OpenWrt, uncheck masquerade on the WAN zone and restart the firewall

Paraphrased from the source. Menus can differ by version, so check the original for full details.

Read the full thread on forum.openwrt.org

Source: Preventing double NAT by mk24 on OpenWrt Forum. Licence: Link only (©).

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

double natstatic routeopenwrt

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