I run dual WAN on DD-WRT, on my GS V2. I even wrote a how-to on DD-WRT's site.
For many users it is important to have two Internet connection options up and running at the same time, a local ISP network, and an encrypted VPN network. This can easily be done with a FlashRouter Dual Router Setup, but if you are ready to scrap your old router and manage all your connection needs AirStation™ Extreme AC1750 Gigabit Dual Band Open Source OPEN SOURCE DD-WRT ROUTER. AirStation Extreme AC1750 Gigabit Dual Band Open Source DD-WRT Wireless Router is a unique DD-WRT router powered by the leading open-source firmware, equipped with robust and high-performance features for custom configuration. Intuitive interface helps you set up and connect in no time Cisco RV042 Dual WAN VPN Router - Cisco
Dual Band & Gigabit Ethernet Offering simultaneous wireless operation on both the 2.4 GHz and 5 GHz bands, the AirStation AC1200 DD-WRT NXT Wireless Router is perfect for streaming HD movies, music and emailing from multiple devices at the same time.
May 27, 2018
Jun 20, 2016 · DD-WRT supports some Atheros-based and Ralink-based chipsets, which means that you can flash DD-WRT on a bigger selection of devices. In fact, manufacturers such as D-Link, TP-Link, and more are available with DD-WRT. Better yet, if you’re interested in wireless repeater modes, DD-WRT has it all over Tomato.
Asus encourages and supports this use and advertises several routers as particularly suitable for DD-WRT including especially the RT-N16 gigabit router. See details on compatibility below. The RT-N13U/B, RT-N12, RT-N10+, WL-520GU and WL-520GC are also advertised as DD-WRT compatible though do not ship with this operating system. AC3000 Tri-Band Wireless Gigabit Dual-WAN VPN SMB Router Dual-WAN ports smooth network loading, minimize network downtime, and allow employees to access your network from the Internet—all with a single router. This wireless router features advanced management, QoS, VLAN, VPN, and other capabilities to ensure optimal performance, scalability, and protection of your network. Intelligently manage your Setup a Dual Band Router with Tomato Firmware Oct 04, 2014