I just bought a new router (TP-Link TL-WR740N V 4.27) and uploaded the DD-WRT firmware which was a piece of cake. No TFTP needed. Confirmed Working: TP-Link TL-WR740N Ver 4.27 running DD-WRT v24-sp2 (04/18/14) std build 23919 Working: Nintendo Zone + Internet Access + Streetpass Tags What I found very frustrating was there was not a dedicated forum thread here just for Macintosh or Windows or Linux or DD-WRT or OpenWRT. All the advice was being thrown around in a single 134+ page thread that's a nightmare to sort through, especially considering you can't search for these terms: "DD-WRT", "Mac OS X" because they're "too short" or "too common" Key bits of information I needed that weren't in some of the guides: In DD-WRT click on the Setup tab and there you will find MAC Address Clone. This MUST be enabled with an address (doesn't matter which one as the cron job will override it while the Mac Cycler script is running) I used 4E:53:50:4F:4F:46 and got my first Streetpass Tags from it. This helped: http://imgur.com/a/a07os#jS3trXH Using 192.168.137.1 as the router gateway address. using the "v4" script from this page to get the mac cycler working. using BASE256 at the moment. The default is BASE16 so for more tags you're going to want to change this. The QSS button on the back of the router doesn't seem to start/stop the cron job like its supposed to. Other advice that's scattered over the web.I'm adding this here for other newbies. I don't know if 100% of this is true but it seems that way to me.: Streetpass tags happen when you have the 3DS closed and you're not in DS sleep mode with a DS game playing. You can only get 6 Streetpass tags from one MAC address, and you can get a maximum of 10 before you must "greet them at the gate" to let them introduce themselves before more can be let in. Once you have gotten one or more streetpass tags from a single MAC address there's a "cool down" period of 8 hours before you can get more from that same MAC. You'll want to snag pink puzzle pieces and play games with your tagged Mii's to take full advantage.