Just recently upgraded from OS X Yosemite to macOS Sierra. Ran into a git issue when trying to do anything git related with a remote repo. I would get the following error:
$ git fetch /Users/YOUR_USERNAME/.ssh/config: line 1: Bad configuration option: useroaming /Users/YOUR_USERNAME/.ssh/config: terminating, 1 bad configuration options fatal: Could not read from remote repository.
The issue was caused by a previous configuration value I set for OpenSSH. I had set
useroaming no because of this vulnerability.
It is now safe to comment out that config option as the version of Open SSH that ships with macOS Sierra no longer has that vulnerability.