SSH keys
SSH IPv6 network is unreachable
DNS or an explicit address selects IPv6, but the client has no usable route or the path blocks IPv6 before SSH begins.
The Tryssh team · July 22, 2026 →
SSH keys
Ed25519 or RSA SSH key
The user needs a new key but must choose an algorithm that the client, server, policy, and recovery process all support.
The Tryssh team · July 22, 2026 →
SSH keys
SSH known_hosts for a custom port
A host on a nondefault port is stored as a bracketed host-and-port identity, so ordinary hostname removal or lookup misses it.
The Tryssh team · July 22, 2026 →
SSH keys
SSH PKCS#11 smartcard not working
The SSH client or agent cannot load, enumerate, or use a key through the intended PKCS#11 provider.
The Tryssh team · July 22, 2026 →
SSH keys
SSH disconnects during rekey
A long-lived or high-volume session fails when the transport rotates keys and one peer mishandles rekey protocol behavior.
The Tryssh team · July 22, 2026 →
SSH keys
SSH root login denied
The network and SSH service work, but direct root authentication is prohibited by policy, key restrictions, cloud image defaults, or account state.
The Tryssh team · July 22, 2026 →