diff --git a/tools/smartdns/smartdns.conf b/tools/smartdns/smartdns.conf
index 5faa6a8..b79ccac 100644
--- a/tools/smartdns/smartdns.conf
+++ b/tools/smartdns/smartdns.conf
@@ -60,7 +60,7 @@ bind [::]:53
 # dns cache size
 # cache-size [number]
 #   0: for no cache
-cache-size 655360
+cache-size 65536
 
 # enable persist cache when restart
 cache-persist yes
@@ -95,6 +95,8 @@ serve-expired-reply-ttl 3
 
 # List of IPs that will be ignored
 # ignore-ip [ip/subnet]
+ignore-ip 127.0.0.0/8
+ignore-ip ::1/128
 
 # speed check mode
 # speed-check-mode [ping|tcp:port|none|,]