IdentityFile ~/.ssh/id_ed25519_sk
IdentityFile ~/.ssh/id_ed25519_sk_secondary

Host ASCN
    ControlMaster auto
    HostName 192.168.56.*
    User vagrant
    Port 22
    ControlPath    ~/.ssh/session.%r@%h:%p
    ControlPersist 5m

Host gon
    ControlMaster  auto
    HostName       git.olympuslab.net
    User           git
    Port           522
    ControlPath    ~/.ssh/session.%r@%h:%p
    ControlPersist 5m