diff --git a/dhcp/ubuntu.md b/dhcp/ubuntu.md
index 16d9a3c..d906c41 100644
--- a/dhcp/ubuntu.md
+++ b/dhcp/ubuntu.md
@@ -58,7 +58,7 @@ authorative;
 subnet 192.168.100.0 netmask 255.255.255.0 {
     range 192.168.100.100 192.168.100.200;
     option routers 192.168.100.1;
-option domain-name-servers 192.168.1.1, 192.168.1.2;
+option domain-name-servers 192.168.100.1;
 }
 ```