# include this in your .ssh/conf like
# Include /home/.../ssh-client-config-example/config
Host wlan1.rack.black
	User root
Host s*.rack.black wlan1.rack.black
	KexAlgorithms +diffie-hellman-group14-sha1
        HostKeyAlgorithms +ssh-rsa
Host git.rack.black s*.rack.black r*.rack.black
	Port 22
Host *.rack.black
	Port 2222
	VerifyHostKeyDNS ask