[vbatts@hack] {master} ~$ ssh infra0
The authenticity of host 'infra0 (192.168.0.23)' can't be established.
ECDSA key fingerprint is 0d:e2:0f:df:9d:18:1b:a6:e9:62:7d:61:f0:e4:be:e6.
Are you sure you want to continue connecting (yes/no)?