Modify /etc/hosts for RedHat when setting hostname

lib/vagrant/systems/redhat.rb

@@ -26,15 +26,14 @@ def enable_host_only_network(net_options)
 
       def change_host_name(name)
         vm.ssh.execute do |ssh|
-          host_name_already_set = ssh.test?("sudo hostname | grep '#{name}'")
-          ssh.exec!("sudo sed -i 's/\\(HOSTNAME=\\).*/\\1#{name}/' /etc/sysconfig/network") unless host_name_already_set
-          ssh.exec!("sudo hostname #{name}") unless host_name_already_set
+          # Only do this if the hostname is not already set
+          if !ssh.test?("sudo hostname | grep '#{name}'")
+            ssh.exec!("sudo sed -i 's/\\(HOSTNAME=\\).*/\\1#{name}/' /etc/sysconfig/network")
+            ssh.exec!("sudo hostname #{name}")
+            ssh.exec!("sudo sed -i 's@^\\(127[.]0[.]0[.]1[[:space:]]\\+\\)@\\1#{name} @' /etc/hosts")
+          end
         end
       end
-
     end
   end
 end
-
-
-