--dhcp-rapid-commit
Enable DHCPv4 Rapid Commit Option specified in RFC 4039. When enabled, dnsmasq will respond to a DHCPDISCOVER message including a Rapid Commit option with a DHCPACK including a Rapid Commit option and fully committed address and configuration information. Should only be enabled if either the server is the only server for the subnet, or multiple servers are present and they each commit a binding for all clients.