Hi all, We have a relatively stable 140 node Openstack deployment consisting of hypervisors and bare-metal. Periodically, we have observed that the baremetals timeout during the PXE.  We have been able to reproduce this relatively easily by rebooting several baremetals simultaneously.I believe I have traced the issue to the dnsmasq reloading every time an entry is added / deleted. Can anyone who has experienced similar issue provide feedback on what you did to work around this ? For what it is worth we are on a stable Queens release. thanks,Fred.