diff --git a/README.md b/README.md
index ef7b583..57f4e8d 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,25 @@ Use:
 config.vm.provision :hostmanager
 ```
 
+Custom IP resolver
+------------------
+
+You can customize way, how host manager resolves IP address
+for each machine. This might be handy in case of aws provider,
+where host name is stored in ssh_info hash of each machine.
+This causes generation of invalid /etc/hosts file.
+
+Custom IP resolver gives you oportunity to calculate IP address
+for each machine by yourself. For example:
+
+```ruby
+config.hostmanager.ip_resolver = proc do |vm|
+  if hostname = (vm.ssh_info && vm.ssh_info[:host])
+    `host #{hostname}`.split("\n").last[/(\d+\.\d+\.\d+\.\d+)/, 1]
+  end
+end
+```
+
 Contribute
 ----------
 Contributions are welcome.
diff --git a/lib/vagrant-hostmanager/config.rb b/lib/vagrant-hostmanager/config.rb
index a553d6c..31f293b 100644
--- a/lib/vagrant-hostmanager/config.rb
+++ b/lib/vagrant-hostmanager/config.rb
@@ -6,6 +6,7 @@ module VagrantPlugins
       attr_accessor :ignore_private_ip
       attr_accessor :aliases
       attr_accessor :include_offline
+      attr_accessor :ip_resolver
 
       alias_method :enabled?, :enabled
       alias_method :include_offline?, :include_offline
@@ -17,6 +18,9 @@ module VagrantPlugins
         @ignore_private_ip = UNSET_VALUE
         @include_offline = UNSET_VALUE
         @aliases = []
+        @aliases = Array.new
+        @include_offline = false
+        @ip_resolver = nil
       end
 
       def finalize!
@@ -35,7 +39,8 @@ module VagrantPlugins
         errors << validate_bool('hostmanager.include_offline', @include_offline)
         errors.compact!
 
-        if !machine.config.hostmanager.aliases.kind_of?(Array) and
+        # check if aliases option is an Array
+        if  !machine.config.hostmanager.aliases.kind_of?(Array) &&
             !machine.config.hostmanager.aliases.kind_of?(String)
           errors << I18n.t('vagrant_hostmanager.config.not_an_array_or_string', {
             :config_key => 'hostmanager.aliases',
@@ -43,7 +48,16 @@ module VagrantPlugins
           })
         end
 
-        { 'HostManager configuration' => errors }
+        if !machine.config.hostmanager.ip_resolver.nil? &&
+           !machine.config.hostmanager.ip_resolver.kind_of?(Proc)
+          errors << I18n.t('vagrant_hostmanager.config.not_a_proc', {
+            :config_key => 'hostmanager.ip_resolver',
+            :is_class   => ip_resolver.class.to_s,
+          })
+        end
+
+        errors.compact!
+        { "HostManager configuration" => errors }
       end
 
       private
diff --git a/lib/vagrant-hostmanager/hosts_file.rb b/lib/vagrant-hostmanager/hosts_file.rb
index ef644cd..a76d871 100644
--- a/lib/vagrant-hostmanager/hosts_file.rb
+++ b/lib/vagrant-hostmanager/hosts_file.rb
@@ -91,12 +91,17 @@ module VagrantPlugins
       end
 
       def get_ip_address(machine)
-        ip = nil
-        if machine.config.hostmanager.ignore_private_ip != true
-          machine.config.vm.networks.each do |network|
-            key, options = network[0], network[1]
-            ip = options[:ip] if key == :private_network
-            next if ip
+        custom_ip_resolver = machine.config.hostmanager.ip_resolver
+        if custom_ip_resolver
+          custom_ip_resolver.call(machine)
+        else
+          ip = nil
+          if machine.config.hostmanager.ignore_private_ip != true
+            machine.config.vm.networks.each do |network|
+              key, options = network[0], network[1]
+              ip = options[:ip] if key == :private_network
+              next if ip
+            end
           end
         end
         ip || (machine.ssh_info ? machine.ssh_info[:host] : nil)
diff --git a/locales/en.yml b/locales/en.yml
index e70efc9..0070d70 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -7,3 +7,4 @@ en:
     config:
       not_a_bool: "A value for %{config_key} can only be true or false, not type '%{value}'"
       not_an_array_or_string: "A value for %{config_key} must be an Array or String, not type '%{is_class}'"
+      not_a_proc: "A value for %{config_key} must be a Proc, not type '%{is_class}'"