Has anyone had issues with ipv6 on Linux? I just recently had a major issue (re)installing Linux Mint 18.1, where it kept crapping out at the end of the install when it was trying to install grub. I couldn't figure it out for the life of me, so I switched over to Korora Cinnamon and it installed fine.

But I kept longing for the simplicity of Linux Mint (or I'm just used to it more), so i finally decided I was going to figure it out if it killed me. So something came up where I needed to install an app while in the live cd. apt hung up, however, and I noticed the address it was trying to download from was in ipv6 format. Then it hit me. I remembered having enabled ivp6 in my router a while ago, and that I had a problem quite some time ago when it was enabled before where apt wouldn't work with ipv6. So I decided to disable ipv6 within the live cd and tried to do the install. It worked fine. Apparently at the point grub is being installed, the installer tried to download some dependencies and just hung up. So problem solved. I just turned off ipv6, the installer went through, and then I disabled ivp6 for apt in the installed system.

So then I was (re)installing plex on this new install, and it wouldn't grab the info from TheMovieDB for my movies. Tv shows populated posters and metadata just fine, but the movies would not. So I decided to try disabling ipv6 at my router to see what happens. Sure enough, all the metadata and posteres populated fine for the movies. Is this something I need to worry about? Why am I having all these issues with ipv6?

Any help would be appreciated.

Carl