asterisk users - Jul 2004 - IAXy prov. using DNS

Hi folks,
I found that I can config my IAXy to connect to a * server that is has a
fixed IP.
I'm using dynamic dns solusion, and I want the IAXy to be able to connect to
domain.name.server instead of IP.
Do you know how to do that?
if it is not possible, do you know when will it be?
thanks