Originally Posted by fcwilt
No matter what private subnet you choose you may run into a conflict - there are a limited number of them.
Um, no. There are THOUSANDS. 172.16.x.x, 10.x.x.x, 192.168.x.x, etc. Meanwhile there's the EXTREMELY high likelihood of another network already using 192.168.1.x/24. Pick something else... move on.
Reliable as what? The entire Internet depends on DNS. DDNS is just a way to keep the associated IP addresses in sync. If you have sync issues then something is not setup correctly.
Clearly you know little of DDNS. You're at the mercy of how often your ISP changes your IP address, then how reliably your local router (or DDNS client) detects this change, then how reliably your DDNS host is at updating their records AND THEN how reliably the end clients are at purging and refreshing their DNS cache (this last issue being the most problematic). As opposed to a static DNS assignment based on a static address with a sane, long-lived timeout. But hey, feel free to stay woefully ill-informed.
Yes, it's clear Lutron's choices are going to be less than ideal for a small segment of the market. Could be the price they'll pay for making the product a lot more reliable for new customers.
Meanwhile anyone with a good relationship with their reseller knows how to solve the problem. Get the software, attend some training and get on with life.