diff --git a/lib/vagrant-libvirt/action/create_network_interfaces.rb b/lib/vagrant-libvirt/action/create_network_interfaces.rb
index eb585e4..f0a0594 100644
--- a/lib/vagrant-libvirt/action/create_network_interfaces.rb
+++ b/lib/vagrant-libvirt/action/create_network_interfaces.rb
@@ -194,7 +194,7 @@ module VagrantPlugins
               # It's used for provisioning and it has to be available during provisioning,
               # ifdown command is not acceptable here.
               next if slot_number.zero?
-              next if options[:auto_config] === false
+              next if !options[:auto_config]
               @logger.debug "Configuring interface slot_number #{slot_number} options #{options}"
 
               network = {
@@ -214,9 +214,6 @@ module VagrantPlugins
                 network[:type] = :dhcp
               end
 
-              # do not run configure_networks for tcp tunnel interfaces
-              next if options.fetch(:tunnel_type, nil)
-
               networks_to_configure << network
             end
 
diff --git a/lib/vagrant-libvirt/util/network_util.rb b/lib/vagrant-libvirt/util/network_util.rb
index a682827..796cf4f 100644
--- a/lib/vagrant-libvirt/util/network_util.rb
+++ b/lib/vagrant-libvirt/util/network_util.rb
@@ -1,6 +1,15 @@
+require 'ipaddr'
 require 'nokogiri'
 require 'vagrant/util/network_ip'
 
+class IPAddr
+  def get_mask
+    if @addr
+      _to_string(@mask_addr)
+    end
+  end
+end
+
 module VagrantPlugins
   module ProviderLibvirt
     module Util
@@ -102,14 +111,18 @@ module VagrantPlugins
             # store type in options
             # use default values if not already set
             options = {
-              iface_type:  type,
-              netmask:      '255.255.255.0',
+              iface_type:   type,
+              netmask:      options[:network_address] ?
+                            IPAddr.new(options[:network_address]).get_mask :
+                            '255.255.255.0',
               dhcp_enabled: true,
               forward_mode: 'nat'
             }.merge(options)
 
             if options[:type].to_s == 'dhcp' && options[:ip].nil?
-              options[:network_name] = 'vagrant-private-dhcp'
+              options[:network_name] = options[:network_name] ?
+                                       options[:network_name] :
+                                       'vagrant-private-dhcp'
             end
 
             # add to list of networks to check