diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index d5abe0d1a1..09da0de03a 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -4355,6 +4355,9 @@ function DHCP_Config_File_Advanced($interface, $wancfg, $wanif) {
 	$dhclientconf .= "{$required_options}";
 	$dhclientconf .= "{$option_modifiers}";
 	$dhclientconf .= "\n";
+	if(is_ipaddrv4($wancfg['dhcprejectfrom'])){
+		$dhclientconf .= "reject {$wancfg['dhcprejectfrom']};\n";
+	}
 	$dhclientconf .= "\tscript \"/sbin/dhclient-script\";\n";
 	$dhclientconf .= "}\n";