Vagrant now asks what adapter to bridge to

lib/vagrant/action/vm/bridged_network.rb

@@ -68,12 +68,31 @@ module Vagrant
         def determine_bridged_interface(networks)
           bridgedifs = @env[:vm].driver.read_bridged_interfaces
 
+          # Output all the interfaces that are available for choices
+          @env[:ui].info I18n.t("vagrant.actions.vm.bridged_networking.available",
+                                :prefix => false)
+
+          bridgedifs.each_index do |index|
+            interface = bridgedifs[index]
+
+            @env[:ui].info("#{index + 1}) #{interface[:name]}", :prefix => false)
+          end
+
+          valid = Range.new(1, bridgedifs.length)
+
           results = []
           networks.each do |network|
-            # TODO: Allow choosing the bridged interface. For now, we just use the
-            # first one blindly.
+            option  = nil
+            while !valid.include?(option)
+              option = @env[:ui].ask("What network should adapter #{network[:adapter]} bridge to? ")
+
+              # We need the numeric value since it will be an index
+              option = option.to_i
+            end
+
+            # Duplicate the options so that we return a new dictionary
             options = network.dup
-            options[:bridge] = bridgedifs[0][:name]
+            options[:bridge] = bridgedifs[option - 1][:name]
             @logger.info("Bridging #{options[:adapter]} => #{options[:bridge]}")
 
             results << options

lib/vagrant/ui.rb

@@ -17,7 +17,7 @@ module Vagrant
         @resource = resource
       end
 
-      [:warn, :error, :info, :success].each do |method|
+      [:ask, :warn, :error, :info, :success].each do |method|
         define_method(method) do |message, *opts|
           # Log normal console messages
           @logger.info { "#{method}: #{message}" }
@@ -48,6 +48,21 @@ module Vagrant
         CODE
       end
 
+      def ask(message, opts=nil)
+        super(message)
+
+        # Setup the options so that the new line is suppressed
+        opts ||= {}
+        opts[:new_line] = false if !opts.has_key?(:new_line)
+        opts[:prefix]   = false if !opts.has_key?(:prefix)
+
+        # Output the data
+        say(:info, message, opts)
+
+        # Get the results and chomp off the newline
+        STDIN.gets.chomp
+      end
+
       # This is used to output progress reports to the UI.
       # Send this method progress/total and it will output it
       # to the UI. Send `clear_line` to clear the line to show

templates/locales/en.yml

@@ -281,6 +281,8 @@ en:
             Failed to connect to VM via SSH. Please verify the VM successfully booted
             by looking at the VirtualBox GUI.
         bridged_networking:
+          available: |-
+            Available bridged network interfaces:
           bridging: |-
             Bridging adapter #%{adapter} to '%{bridge}'
           enabling: |-