Looking for good Older WEP security routers

[Kazmirl]

I'm looking into doing a DNS bypass trick in Gen4/5 Pokemon and it uses the old Nintendo DS (like 2009-11) era Internet. It's not compatible with the newer things, like they will not connect to modern WPA/WPA2 Wi-Fi networks, and it's become apparent I'm going to have to set up a router to do this. If anyone knows what kinda router I'd be looking for (Or modem i have no idea) It'd be appreciated. I'm looking into it myself, but figured this was the kinda of place to learn and get some advice