@tcso Surely run this by your network admins but if you use my configuration there is low risk to your network infrastructure. https://forums.fogproject.org/topic/12796/installing-dnsmasq-on-your-fog-server?_=1690230679683
dnsmasq is a swiss army knife of services and if misconfigured will cause problems in your network. But using it in a proxydhcp configuration it will only provide pxe boot information only for your network. When the fog server is powered off then no pxe boot information, which you can’t pxe boot without fog anyway. So no harm no foul here. FWIW, proxydhcp is what windows wds uses to configure the target computers for pxe booting. A ProxyDHCP announcement will override anything configured in dhcp options 66 and 67.