Unable to install services on my instance.

What am I doing wrong?

I could have swore I am doing it right.

[ec2-user@localhost ~]$ sudo yum install -y telnet-server

Amazon Linux 2023 repository 0.0 B/s | 0 B 00:00
Errors during downloading metadata for repository 'amazonlinux':

• Curl error (6): Couldn't resolve host name for https://al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com/core/mirrors/2023.2.20231113/x86_64/mirror.list [Could not resolve host: al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com] Error: Failed to download metadata for repo 'amazonlinux': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com/core/mirrors/2023.2.20231113/x86_64/mirror.list [Could not resolve host: al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com] Amazon Linux 2023 Kernel Livepatch repository 0.0 B/s | 0 B 00:00
  Errors during downloading metadata for repository 'kernel-livepatch':
• Curl error (6): Couldn't resolve host name for https://al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com/kernel-livepatch/mirrors/al2023/x86_64/mirror.list [Could not resolve host: al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com] Error: Failed to download metadata for repo 'kernel-livepatch': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com/kernel-livepatch/mirrors/al2023/x86_64/mirror.list [Could not resolve host: al2023-repos-default-de612dc2.s3.dualstack.default.amazonaws.com] Ignoring repositories: amazonlinux, kernel-livepatch No match for argument: telnet-server Error: Unable to find a match: telnet-server