Check if machines are ready for SSH communication.

lib/vagrant-hostmanager/action/update_hosts_file.rb

@@ -39,10 +39,12 @@ module VagrantPlugins
           # copy the hosts file to each matching machine
           # TODO append hostname to loopback address
           matching_machines.each do |machine|
+            if machine.communicate.ready?
               env[:ui].info @translator.t('update', { :name => machine.name })
               machine.communicate.upload(path, '/tmp/hosts')
               machine.communicate.sudo("mv /tmp/hosts /etc/hosts")
             end
+          end
 
           @app.call(env)
         end

lib/vagrant-hostmanager/version.rb

@@ -1,5 +1,5 @@
 module VagrantPlugins
   module HostManager
-    VERSION = '0.0.2'
+    VERSION = '0.0.3'
   end
 end

test/test.sh

@@ -5,6 +5,10 @@ echo "[server1] /etc/hosts file:"
 vagrant ssh server1 -c 'cat /etc/hosts'
 echo "[server2] /etc/hosts file:"
 vagrant ssh server2 -c 'cat /etc/hosts'
+
+vagrant halt
+vagrant up
+
 vagrant destroy server1 -f
 echo "[server2] /etc/hosts file:"
 vagrant ssh server2 -c 'cat /etc/hosts'