diff --git a/src/etc/inc/globals.inc b/src/etc/inc/globals.inc
index 6916117322..c101b7d251 100644
--- a/src/etc/inc/globals.inc
+++ b/src/etc/inc/globals.inc
@@ -137,6 +137,7 @@ $sysctls = array("net.inet.ip.portrange.first" => "1024",
 	"net.link.bridge.pfil_member" => "1",
 	"net.link.bridge.pfil_bridge" => "0",
 	"net.link.tap.user_open" => "1",
+	"net.link.vlan.mtag_pcp" => "1",
 	"kern.randompid" => "347",
 	"net.inet.ip.intr_queue_maxlen" => "1000",
 	"hw.syscons.kbd_reboot" => "0",