From 0c1ff17c4359664176bc7a0f0fecca870b8cf404 Mon Sep 17 00:00:00 2001
From: Chris Roberts <croberts@hashicorp.com>
Date: Tue, 9 Nov 2021 13:08:41 -0800
Subject: [PATCH] Only allow mappers logging output if explicitly requested

---
 lib/vagrant/shared_helpers.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/vagrant/shared_helpers.rb b/lib/vagrant/shared_helpers.rb
index e324b2978..fc3130a4a 100644
--- a/lib/vagrant/shared_helpers.rb
+++ b/lib/vagrant/shared_helpers.rb
@@ -249,6 +249,10 @@ module Vagrant
         end
       end
     end
+    if ENV["VAGRANT_LOG_MAPPER"] == ""
+      Log4r::Logger.new("vagrantplugins::command::serve::mappers::internal")
+      l.outputters = nil
+    end
     @_server_mode = true
   end