DynDNS - full domain redirection or at least www sub-domain redirection

Hi, I have some domains that are managed by OVH and I wish to redirect them to my own private server that has dynamic IP address.
Currently I'm using standard solution, which is sub-domain that is redirected using DynDNS tab.
I wonder if there is any way to point whole domain on my IP that would be updated every time when I have IP will be updated by my provider?
I guess it may be difficult or impossible because of delay in DNS propagation.
So if that would be impossible, I have question about optional solution:

Is it possible to redirect "www" sub-domain?
I did try it in the past, and as I remember it doesn't work. Probably www sub-domain is by default set as alias for main domain - so I guess that DNS record needs to be removed, before adding www sub–domain as dyndns.
Could anyone help me step by step - how to do it?
Thanks :slight_smile:

Hey there. Did you solve this problem? I want do the same thing and I have also no idea how to manage it.