Remove nil defaults

lib/vagrant/config/ssh.rb

@@ -15,11 +15,8 @@ module Vagrant
 
       def initialize
         @shell            = "bash"
-        @port             = nil
-        @guest_port       = nil
         @forward_agent    = false
         @forward_x11      = false
-        @private_key_path = nil
       end
 
       def forwarded_port_key=(value)

lib/vagrant/driver/virtualbox_4_1.rb

@@ -362,6 +362,8 @@ module Vagrant
       end
 
       def ssh_port(expected_port)
+        @logger.debug("Searching for SSH port: #{expected_port.inspect}")
+
         # Look for the forwarded port only by comparing the guest port
         read_forwarded_ports.each do |_, _, hostport, guestport|
           return hostport if guestport == expected_port