When setting up multiple Wordpress multi-sites, the "My Sites" Network Admin functions all point to the same base site.

I set up two seperate Wordpress on a newly-spun Ubuntu server following these directions:

https://www.digitalocean.com/community/tutorials/how-to-set-up-multiple-wordpress-sites-on-a-single-ubuntu-vps

Everything worked fine at that point, but I then enabled multi-site on the separate Wordpress installations. For that I followed the directions here: https://www.digitalocean.com/community/tutorials/how-to-set-up-multiple-wordpress-sites-using-multisite

I ran into the topic issue; while one installation works fine, when I try to access the “My Sites” functionality, as soon as I hover over any of the Network Admin links, the second site links to the admin functions of the first. All the links otherwise (except the circular refresh plugins icon at the top) on the second site work correctly, it’s just the Network Admin stuff.

Any thoughts on what would cause this?