dns name in Tunnel config

Currently any of the Tunnel config’s only use IP’s to terminate the tunnels. requiring a static ip address to do this.
is their an option to have a tunnel either EIOP/GRE/IP able to use ip’s or Dns names to build a tunnel to a dynamic dns
name.?

You can use dynamic hostnames indirectly:
You can use a script to lookup dynamic ip hostnames every few minutes for the tunnel ip addresses:
http://forum.mikrotik.com/t/ppp-dial-out-server-with-dynamic-ip-address-solved/36299/1