re-implemented redhat distribution of host only network with additional check to see if network interface is up as on intial setup when not using dhcp the interface will be down as dhcp lookup will time out. To prevent vagrant time out on boot you need to add file /etc/dhclient.conf with value content timeout 1; to guest this is beacuse the default is 60 seconds this should be done in the base box

lib/vagrant/action/vm/network.rb

@@ -25,8 +25,8 @@ module Vagrant
 
           if enable_network?
             @env.ui.info I18n.t("vagrant.actions.vm.network.enabling")
-            @env["vm"].system.prepare_host_only_network
             @env.env.config.vm.network_options.compact.each do |network_options|
+              @env["vm"].system.prepare_host_only_network(network_options)
               @env["vm"].system.enable_host_only_network(network_options)
             end
           end

lib/vagrant/systems.rb

@@ -6,3 +6,4 @@ require 'vagrant/systems/solaris'
 
 require 'vagrant/systems/debian'
 require 'vagrant/systems/gentoo'
+require 'vagrant/systems/redhat'

lib/vagrant/systems/base.rb

@@ -68,7 +68,7 @@ module Vagrant
 
       # Prepares the system for host only networks. This is called
       # once prior to any `enable_host_only_network` calls.
-      def prepare_host_only_network
+      def prepare_host_only_network(net_options = nil)
         raise BaseError, :_key => :unsupported_host_only
       end
 

lib/vagrant/systems/debian.rb

@@ -1,7 +1,7 @@
 module Vagrant
   module Systems
     class Debian < Linux
-      def prepare_host_only_network
+      def prepare_host_only_network(net_options = nil)
         # Remove any previous host only network additions to the
         # interface file.
         vm.ssh.execute do |ssh|

lib/vagrant/systems/gentoo.rb

@@ -1,7 +1,7 @@
 module Vagrant
   module Systems
     class Gentoo < Linux
-      def prepare_host_only_network
+      def prepare_host_only_network(net_options = nil)
         # Remove any previous host only network additions to the
         # interface file.
         vm.ssh.execute do |ssh|

lib/vagrant/systems/redhat.rb

@@ -1,13 +1,13 @@
 module Vagrant
   module Systems
     class Redhat < Linux
-      def prepare_host_only_network(net_options = nil)
+      def prepare_host_only_network(net_options)
         # Remove any previous host only network additions to the
         # interface file.
         vm.ssh.execute do |ssh|
           # Clear out any previous entries
-          #ssh.exec!("sudo sed -e '/^#VAGRANT-BEGIN/,/^#VAGRANT-END/ d' /etc/sysconfig/network-scripts/ifcfg-eth#{net_options[:adapter]} > /tmp/vagrant-ifcfg-eth#{net_options[:adapter]}")
-          #ssh.exec!("sudo su -c 'cat /tmp/vagrant-ifcfg-eth#{net_options[:adapter]} > /etc/sysconfig/network-scripts/ifcfg-eth#{net_options[:adapter]}'")
+          ssh.exec!("sudo sed -e '/^#VAGRANT-BEGIN/,/^#VAGRANT-END/ d' /etc/sysconfig/network-scripts/ifcfg-eth#{net_options[:adapter]} > /tmp/vagrant-ifcfg-eth#{net_options[:adapter]}")
+          ssh.exec!("sudo su -c 'cat /tmp/vagrant-ifcfg-eth#{net_options[:adapter]} > /etc/sysconfig/network-scripts/ifcfg-eth#{net_options[:adapter]}'")
         end
       end
 
@@ -17,7 +17,8 @@ module Vagrant
         vm.ssh.upload!(StringIO.new(entry), "/tmp/vagrant-network-entry")
 
         vm.ssh.execute do |ssh|
-          ssh.exec!("sudo /sbin/ifdown eth#{net_options[:adapter]} 2> /dev/null")
+          interface_up = ssh.test?("/sbin/ifconfig eth#{net_options[:adapter]} | grep 'inet addr:'")
+          ssh.exec!("sudo /sbin/ifdown eth#{net_options[:adapter]} 2> /dev/null") if interface_up
           ssh.exec!("sudo su -c 'cat /tmp/vagrant-network-entry >> /etc/sysconfig/network-scripts/ifcfg-eth#{net_options[:adapter]}'")
           ssh.exec!("sudo /sbin/ifup eth#{net_options[:adapter]}")
         end

lib/vagrant/vm.rb

@@ -60,6 +60,7 @@ module Vagrant
         mapping = {
           :debian => Systems::Debian,
           :gentoo => Systems::Gentoo,
+          :redhat => Systems::Redhat,
           :linux => Systems::Linux,
           :solaris => Systems::Solaris
         }