Host acif500.ucr.edu
User zido
IdentityFile ~/.ssh/identity_don
-Host volo
+Host volo dn-volo.donarmstrong.com
User don
HostKeyAlias volo
CheckHostIP no
IdentityFile ~/.ssh/identity_don
+ ControlPath ~/tmp/volo_%p_%r
Host zeto
User don
HostKeyAlias zeto