Attempting install on my first rig. MSI Z270a Pro

Installer gets hung on connecting to security.ubuntu.com

I've read this may be an issue with ipv6 in place instead of ipv4, but not seeing any option to change in MB bios. I suppose this is more of a linux question.

Should I go into windows and change a setting, then back out and re-boot into SM installer? Getting stuck, thank you for any help.