Within days I'm going to design a sensor data and status reporting regime for field deployed Omega2+ (O2+) devices. Implementation would shortly follow.

It seems every device I run in my house (office is at house as well) will come up with a IPv6 GUA address, with the exception of the O2+ devices. What is the significance of this? Every device (desktops, telephones, RPi's and others) come up globally routeable. I can sit at the pub (not that I ever do that) and ssh into the Pi or one of the Linux servers using a IPv6 address with total disregard to the IPv4 NAT reality of most home and office environments. The O2+ devices are not automatically generating IPv6 GUA addresses and are therefore cannot be routed to from the outside of a NAT environment.

What config parameters need to be changed, and in which files, to "encourage" the O2+ devices to compute their IPv6 GUA addresses?

thanks!
Bill