diff --git a/packer/scripts/centos/ks.cfg b/packer/scripts/centos/ks.cfg
index 8945775ba..81c9f2f98 100644
--- a/packer/scripts/centos/ks.cfg
+++ b/packer/scripts/centos/ks.cfg
@@ -39,3 +39,4 @@ echo "vagrant" | passwd --stdin vagrant
 # sudo
 echo "vagrant        ALL=(ALL)       NOPASSWD: ALL" >> /etc/sudoers
 sed -i "s/^.*requiretty/#Defaults requiretty/" /etc/sudoers
+echo "options single-request-reopen" >> /etc/resolv.conf