diff --git a/lib/vagrant/util/guest_hosts.rb b/lib/vagrant/util/guest_hosts.rb
index c0c16c098..b6855002e 100644
--- a/lib/vagrant/util/guest_hosts.rb
+++ b/lib/vagrant/util/guest_hosts.rb
@@ -17,7 +17,7 @@ module Vagrant
           basename = name.split(".", 2)[0]
           comm.sudo <<-EOH.gsub(/^ {14}/, '')
           grep -w '#{name}' /etc/hosts || {
-            for i in {1..#{loop_bound}}; do
+            for i in #{[*1..loop_bound].join(' ')}; do
               grep -w "127.0.${i}.1" /etc/hosts || {
                 echo "127.0.${i}.1 #{name} #{basename}" >> /etc/hosts
                 break
diff --git a/test/unit/vagrant/util/guest_hosts_test.rb b/test/unit/vagrant/util/guest_hosts_test.rb
index bc48dc81f..86be31117 100644
--- a/test/unit/vagrant/util/guest_hosts_test.rb
+++ b/test/unit/vagrant/util/guest_hosts_test.rb
@@ -20,8 +20,8 @@ describe "Vagrant::Util::GuestHosts" do
     end
 
     it "can add hostname to loopback interface" do
-      subject.add_hostname_to_loopback_interface(comm, "test.end", 40)
-      expect(comm.received_commands[0]).to match(/for i in {1..40}; do/)
+      subject.add_hostname_to_loopback_interface(comm, "test.end", 4)
+      expect(comm.received_commands[0]).to match(/for i in 1 2 3 4; do/)
       expect(comm.received_commands[0]).to match(/echo \"127.0.\${i}.1 test.end test\" >> \/etc\/hosts/)
     end
   end
@@ -35,8 +35,8 @@ describe "Vagrant::Util::GuestHosts" do
     end
 
     it "can add hostname to loopback interface" do
-      subject.add_hostname_to_loopback_interface(comm, "test.end", 40)
-      expect(comm.received_commands[0]).to match(/for i in {1..40}; do/)
+      subject.add_hostname_to_loopback_interface(comm, "test.end", 4)
+      expect(comm.received_commands[0]).to match(/for i in 1 2 3 4; do/)
       expect(comm.received_commands[0]).to match(/echo \"127.0.\${i}.1 test.end test\" >> \/etc\/hosts/)
     end
   end