From 1b5a20ac8a9438c054651aa7ec63032221b6a134 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Thu, 28 Nov 2024 15:41:22 +0100
Subject: [PATCH] dnsmasq: disable ping for duplicate address detection
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Some things don’t reply which holds up all requests for 3 seconds.
---
 roles/dnsmasq/templates/00-options.conf.j2 | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/roles/dnsmasq/templates/00-options.conf.j2 b/roles/dnsmasq/templates/00-options.conf.j2
index 8c15522..1c2c3ac 100644
--- a/roles/dnsmasq/templates/00-options.conf.j2
+++ b/roles/dnsmasq/templates/00-options.conf.j2
@@ -1,11 +1,16 @@
 # disable DNS server
 port = 0
 
+# we are the only DHCP server
+dhcp-authoritative
+
+# don’t try to ping clients for duplicate IP check
+# has 3 s timeout during which no other requests are processed
+no-ping
+
 bind-interfaces
 interface = {{ interfaces | map(attribute='name') | join(',') }}
 
-dhcp-authoritative
-
 dhcp-option = option:dns-server,{{ dns | join(',') }}
 dhcp-option = option:ntp-server,{{ ntp | join(',') }}