@mahong I was able to successfully run siad on the local IP of one of my servers so that I could point Duplicati backup (installed on my laptop) to it. However, it appeared to generate new sia data files instead of use my existing ones with available sia coin. But I am working on that angle this morning. Here is what I did to get the sia daemon to work:
siad --api-addr 192.168.1.127:9980 --disable-api-security --authenticate-api
And then it prompted me for an API password. I created a password, typing it once, then again. Then the daemon was running. In my use case, I was then able to successfully point the Duplicati backup software to the sia daemon.