On Fri, 1 Mar 2019, Jeffrey Walton wrote:
This is kind of unusual. Raspberry Pi 3 B+ with Aarch64 image. My SSH session keeps dying. I've noticed it happens about every half hour. When I log into the physical machine I see the IP address has changed.
This sounds like the IPv6 privacy option.
https://blog.linitx.com/control-privacy-addressing-ipv6-linux/