Shared SSH connections

~/.ssh/config

Host spirit
  Compression yes
  ForwardX11 yes
  Ciphers blowfish-cbc,arcfour

Host 192.168.*
        StrictHostKeyChecking no
        UserKnownHostsFile=/dev/null

Host 10.*
    StrictHostKeyChecking no
    UserKnownHostsFile=/dev/null
    
Host *
    ControlMaster auto
    ControlPath ~/.ssh/sockets/%r@%h-%p
    ControlPersist 600

Create directory

~/.ssh/sockets