SSH connection resumption
Teleport v15 introduces automatic SSH connection resumption if the network path between the client and the Teleport node is interrupted due to connectivity issues, and transparent connection migration if the control plane is gracefully upgraded.

The feature is active by default when a v15 client (tsh, OpenSSH or PuTTY configured by tsh config, or Teleport Connect) connects to a v15 Teleport node.