diff --git a/etc/dnsmasq.d/acegrp.conf b/etc/dnsmasq.d/acegrp.conf
index f4f1879..8e068a3 100644
--- a/etc/dnsmasq.d/acegrp.conf
+++ b/etc/dnsmasq.d/acegrp.conf
@@ -112,3 +112,7 @@ cname=wpad.acegrp.lan,rpiluc001.acegrp.lan
 # -- invité --
 dhcp-host=d4:5d:64:67:3b:13,dskjojo001,192.168.100.159,infinite
 dhcp-host=b0:5a:da:58:57:7b,catwin001,192.168.100.158,infinite
+
+# Delays sending DHCPOFFER and proxydhcp replies for at least the specified number of seconds.
+dhcp-mac=set:client_is_a_pi,B8:27:EB:*:*:*
+dhcp-reply-delay=tag:client_is_a_pi,2