Problem: unix listener too long for Unix domain socket
Solution: mkdir ~/.ssh/control and modify ~/.ssh/config use the %C format instead of %r@%h:%p
mkdir ~/.ssh/control
~/.ssh/config
%C
%r@%h:%p
More Detail: man ssh_config defines the %C format as 'a hash of the concatenation: %l%h%p%r'
man ssh_config
Amazing, thank you for pointing this solution out!
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