[HECnet] Dynammic IP for LEGATO?

I'm going to need to change my ISP in a month or two and a static IP is going to add about $30-$35/month to the cost. I've decided that dDNS will suffice for all the stuff I'm currently doing and it's not really worth it, except maybe Multinet DECnet links to LEGATO. I also looked into using a VPN provider to establish a static IP gateway that's automatically routed to my server, but that costs almost as much and is much more hassle to maintain. I'm thinking about just living without static IPs anymore. There's about half a dozen sites currently connected to LEGATO - is anybody going to have a problem if the IP becomes dynamic at some point? As with most dynamic IP situations, I don't expect that the IP address will actually change very often (maybe once every few months), but the possibility exists that it will. Bob