diff --git a/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb b/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb
index 6398b6ca0..6bd24bbac 100644
--- a/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb
+++ b/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb
@@ -64,6 +64,12 @@ module Vagrant
           # Get the extra ports we consider in use
           extra_in_use = env[:port_collision_extra_in_use] || {}
 
+          # If extras are provided as an Array (previous behavior) convert
+          # to Hash as expected for IP aliasing support
+          if extra_in_use.is_a?(Array)
+            extra_in_use = Hash[extra_in_use.map{|port| [port, Set.new(["*"])]}]
+          end
+
           # Get the remap
           remap = env[:port_collision_remap] || {}
 
diff --git a/plugins/providers/docker/action/create.rb b/plugins/providers/docker/action/create.rb
index 6b4122693..61afc24b5 100644
--- a/plugins/providers/docker/action/create.rb
+++ b/plugins/providers/docker/action/create.rb
@@ -129,6 +129,9 @@ module VagrantPlugins
             # Don't include SSH if we've explicitly asked not to
             next if options[:id] == "ssh" && !include_ssh
 
+            # Skip port if it is disabled
+            next if options[:disabled]
+
             # If the guest port is 0, put it in the random group
             if options[:guest] == 0
               random << options[:host]
diff --git a/test/unit/vagrant/action/builtin/handle_forwarded_port_collisions_test.rb b/test/unit/vagrant/action/builtin/handle_forwarded_port_collisions_test.rb
new file mode 100644
index 000000000..8ffb08339
--- /dev/null
+++ b/test/unit/vagrant/action/builtin/handle_forwarded_port_collisions_test.rb
@@ -0,0 +1,109 @@
+require File.expand_path("../../../../base", __FILE__)
+
+require Vagrant.source_root.join("plugins/kernel_v2/config/vm")
+
+describe Vagrant::Action::Builtin::HandleForwardedPortCollisions do
+  include_context "unit"
+
+  let(:app) { lambda { |env| } }
+  let(:env) {
+    { machine: machine, ui: ui, port_collision_extra_in_use: extra_in_use,
+      port_collision_remap: collision_remap, port_collision_repair: collision_repair,
+      port_collision_port_check: collision_port_check }
+  }
+  let(:extra_in_use){ nil }
+  let(:collision_remap){ nil }
+  let(:collision_repair){ nil }
+  let(:collision_port_check){ nil }
+
+  let(:machine) do
+    double("machine").tap do |machine|
+      allow(machine).to receive(:config).and_return(machine_config)
+      allow(machine).to receive(:env).and_return(machine_env)
+    end
+  end
+
+  let(:machine_config) do
+    double("machine_config").tap do |config|
+      config.stub(vm: vm_config)
+    end
+  end
+
+  let(:data_dir){ temporary_dir }
+
+  let(:machine_env) do
+    isolated_environment.tap do |i_env|
+      allow(i_env).to receive(:data_dir).and_return(data_dir)
+      allow(i_env).to receive(:lock).and_yield
+    end
+  end
+
+  let(:vm_config) do
+    double("machine_vm_config").tap do |config|
+      allow(config).to receive(:usable_port_range).and_return(1000..2000)
+      allow(config).to receive(:networks).and_return([])
+    end
+  end
+
+  let(:ui) do
+    double("ui").tap do |result|
+      allow(result).to receive(:info)
+    end
+  end
+
+  let(:instance){ described_class.new(app, env) }
+
+  describe "#call" do
+    it "should create a lock while action runs" do
+      expect(machine_env).to receive(:lock).with("fpcollision").and_yield
+      instance.call(env)
+    end
+
+    context "with extra ports in use provided as Array type" do
+      let(:extra_in_use){ [80] }
+
+      it "should not generate an error" do
+        expect{ instance.call(env) }.not_to raise_error
+      end
+    end
+
+    context "with forwarded port defined" do
+      let(:port_options){ {guest: 80, host: 8080} }
+      before do
+        expect(vm_config).to receive(:networks).and_return([[:forwarded_port, port_options]]).twice
+      end
+
+      it "should check if host port is in use" do
+        expect(instance).to receive(:is_forwarded_already).and_return false
+        instance.call(env)
+      end
+
+      context "with forwarded port already in use" do
+        let(:extra_in_use){ [8080] }
+
+        it "should raise a port collision error" do
+          expect{ instance.call(env) }.to raise_error(Vagrant::Errors::ForwardPortCollision)
+        end
+
+        context "with auto_correct enabled" do
+          before{ port_options[:auto_correct] = true }
+
+          it "should raise a port collision error" do
+            expect{ instance.call(env) }.to raise_error(Vagrant::Errors::ForwardPortCollision)
+          end
+
+          context "with collision repair enabled" do
+            let(:collision_repair){ true }
+
+            it "should automatically correct collision" do
+              expect{ instance.call(env) }.not_to raise_error
+            end
+          end
+        end
+      end
+    end
+  end
+
+  describe "#recover" do
+  end
+end