Use the hash since it's always 40 characters long and won't hit the maximum...

Use the hash since it's always 40 characters long and won't hit the maximum length of system pathname.

.ssh/config.d/10_global

 Compression yes
 ControlMaster auto
-ControlPath ~/.ssh/%r@%h:%p.sock
+ControlPath ~/.ssh/%C.sock
 ControlPersist 3m
 ServerAliveInterval 30
 IdentitiesOnly yes