Breakthrough! I didn't change anything on the DB-11 and it ran fine since my previous post. Really got me thinking about what is causing this. So back into IPConfig I go because I really need to change the bitrate and a few image mode settings. Changed the bitrate, saved, all is good... let it run for while and no problems. I go back to IPConfig, change to image tab, change to Night mode to BW - BAM! - immediately camera goes offline and back to constant reboot mode. Went through factory default process to re-setup the camera and try again. Same results - changes to the Image tab corrupts the camera configuration. So I can recreate the problem at will.
Then I get to wondering why this happens to me and not others. Leads me to wondering if this a problem with the OSX ported version of IPConfig. Go back through factory reset and get DB-11 online. This time I download IPConfig on one of my windows PCs and make changes there. I can immediately tell the software is behaving differently. It worked fine! In fact, it has more options than the OSX version and i've tweaked a ton of things - all without bricking the DB-11.
So in summary, in my experience - don't use the OSX version of IPConfig with this device!! Hope this helps someone.