Being a fan and veteran of both DNS services dyndns.org and no-ip.org I was always very slightly annoyed that I could not do this with my personal domain name. The annoyance went up a little more when DynDNS started forcing me to log in every 3 months just to let them know I am still alive.
Since moving to Linode this weekend, I setup my own short DNS updating script. Update the variables APIKEY, DOMAIN, and RECORD to your desired settings and let her rip. Here are my settings for reference. This way when I hit
home.pushingkarma.com, it routes to my home network.