Add RFC4039 rapid commit support.
diff --git a/dnsmasq.conf.example b/dnsmasq.conf.example
index 574b053..008ddb7 100644
--- a/dnsmasq.conf.example
+++ b/dnsmasq.conf.example
@@ -547,6 +547,14 @@
# http://www.isc.org/files/auth.html
#dhcp-authoritative
+# Set the DHCP server to enable DHCPv4 Rapid Commit Option per RFC 4039.
+# In this mode it 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. This must 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.
+#dhcp-rapid-commit
+
# Run an executable when a DHCP lease is created or destroyed.
# The arguments sent to the script are "add" or "del",
# then the MAC address, the IP address and finally the hostname