diff --git a/omr-6in4/files/etc/init.d/omr-6in4 b/omr-6in4/files/etc/init.d/omr-6in4
index 757ee609c..5bec94c02 100755
--- a/omr-6in4/files/etc/init.d/omr-6in4
+++ b/omr-6in4/files/etc/init.d/omr-6in4
@@ -61,7 +61,8 @@ set_ipv6_state() {
 			set dhcp.lan.ra_default="1"
 			set dhcp.lan.ra_preference="high"
 			set dhcp.lan.ra_management="1"
-			set dhcp.lan.ra_flags='managed-config'
+			delete dhcp.lan.ra_flags
+			add_list dhcp.lan.ra_flags='managed-config'
 			set dhcp.lan.ra_slaac='1'
 			add_list dhcp.lan.ra_flags='other-config'
 			set network.lan.ipv6="1"