UPDATE: See the comment at the bottom for something easier to try.
For those that have read my article on DNS Made Easy, you know that I love it. One fee, and DNS that isn’t terrible!
Previously I had used no-ip.com to get Dynamic DNS. But that was annoying because left and right they tried to hook you with some “monthly package deal” and demanded you log in regularly if you didn’t pay. If you didn’t log in every 30 days, they would cancel your DNS records.
DNS Made Easy, on the other hand, is a FULL dns service which ALSO has Dynamic DNS. The only problem is that it’s not on the “standard” list of Dynamic DNS providers.
So in order to make this work properly, you have to get a little inventive. I was unable to make this properly work from within the Web GUI, maybe you’ll have better luck. I did, however, have success with this crontab entry:
*/2 * * * * root wget -qO - "http://www.dnsmadeeasy.com/servlet/updateip?username=[USERNAME]&password=[DNSPassword]&id=[DDNS ID]&ip=`wget -q -O - http://checkip.dyndns.org|sed -e \s/.*Current IP Address: //\ -e \s/<.*$//\`"
The holdup, as I learned, was that DD-WRT’s bastardized version of wget does not work (at all) without an http:// prefix on your URLs. Furthermore, it does not print any error at all. It just sits there and does nothing.
Regardless, place that in your Administration->CRON section and then execute:
stopservice cron && startservice cron
in your commands. You should be set to go! This updates every even minute (as that’s what */2 means). For more about this, you’ll have to know about cron and whatnot.