**Motivations:**
- Document the deep root cause of ControlSocket already exists errors
- Explain why ControlMaster=auto doesn't remove invalid sockets
- Document the solution to aggressively clean up dead sockets
**Root causes:**
- Documentation needed to explain the root cause of socket invalidation
- Need to document why directory removal is necessary for proper cleanup
**Correctifs:**
- Added deep root cause analysis section explaining ControlMaster=auto behavior
- Documented why dead sockets accumulate and cause subsequent failures
- Updated corrections section with latest improvements
**Evolutions:**
- More complete documentation of the problem and solution
**Pages affectées:**
- fixKnowledge/ssh-connection-errors-deployment.md: Added root cause analysis and updated corrections
Nicolas Cantu
f02b3938a1