diff --git a/lib/vagrant-libvirt/action/forward_ports.rb b/lib/vagrant-libvirt/action/forward_ports.rb
index dfdfc6a..0064ee6 100644
--- a/lib/vagrant-libvirt/action/forward_ports.rb
+++ b/lib/vagrant-libvirt/action/forward_ports.rb
@@ -100,6 +100,7 @@ module VagrantPlugins
             StrictHostKeyChecking=no
             PasswordAuthentication=no
             ForwardX11=#{ssh_info[:forward_x11] ? 'yes' : 'no'}
+            IdentitiesOnly=#{ssh_info[:keys_only] ? 'yes' : 'no'}
           ) + ssh_info[:private_key_path].map do |pk|
                 "IdentityFile='\"#{pk}\"'"
               end).map { |s| s.prepend('-o ') }.join(' ')