I block port 8999 at the firewall as it is probed a lot. So, I tried setting a custom port on SDIO and natting to it on this specific machine.
When I start an update download from within SDIO, nothing happens and I can see a simultaneous increase in outside hits on 8999. No activity whatsoever on the custom port. Even with the custom port setting unchanged in SDIO, if I open 8999 and update my natting, the download begins to progress.
I did exit SDIO, make sure it’s processes were all gone, and restart it after the port setting was changed to make sure, but no difference.
I can only assume that the port setting in options is not being recognized.