diff --git a/06.PVE制作DNS服务器.md b/06.PVE制作DNS服务器.md
index 9527556..12c2ab7 100644
--- a/06.PVE制作DNS服务器.md
+++ b/06.PVE制作DNS服务器.md
@@ -439,7 +439,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=2048
-max-cache-ttl=21600
+max-cache-ttl=10800
 fast-dns-retry=1800
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
diff --git a/07.PVE制作TS服务器.md b/07.PVE制作TS服务器.md
index fc6ed25..3357861 100644
--- a/07.PVE制作TS服务器.md
+++ b/07.PVE制作TS服务器.md
@@ -512,7 +512,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=2048
-max-cache-ttl=21600
+max-cache-ttl=10800
 fast-dns-retry=1800
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
diff --git a/src/debian/debian_dns_dnsmasq.conf b/src/debian/debian_dns_dnsmasq.conf
index 4a06829..9aab32c 100644
--- a/src/debian/debian_dns_dnsmasq.conf
+++ b/src/debian/debian_dns_dnsmasq.conf
@@ -10,7 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=2048
-max-cache-ttl=21600
+max-cache-ttl=10800
 fast-dns-retry=1800
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
diff --git a/src/debian/debian_ts_dnsmasq.conf b/src/debian/debian_ts_dnsmasq.conf
index 7af5694..3265bd4 100644
--- a/src/debian/debian_ts_dnsmasq.conf
+++ b/src/debian/debian_ts_dnsmasq.conf
@@ -10,7 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=2048
-max-cache-ttl=21600
+max-cache-ttl=10800
 fast-dns-retry=1800
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/