diff --git a/lib/vagrant/systems/linux.rb b/lib/vagrant/systems/linux.rb
index 4be54dd4d..021a687b7 100644
--- a/lib/vagrant/systems/linux.rb
+++ b/lib/vagrant/systems/linux.rb
@@ -80,6 +80,7 @@ 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")
           ssh.exec!("sudo su -c 'cat /tmp/vagrant-network-entry >> /etc/network/interfaces'")
           ssh.exec!("sudo /sbin/ifup eth#{net_options[:adapter]}")
         end