diff --git a/gluon/gluon-ebtables-filter-multicast/files/lib/gluon/ebtables/110-mcast-allow-dhcpv6 b/gluon/gluon-ebtables-filter-multicast/files/lib/gluon/ebtables/110-mcast-allow-dhcpv6
index d156de4..6d7f0f5 100644
--- a/gluon/gluon-ebtables-filter-multicast/files/lib/gluon/ebtables/110-mcast-allow-dhcpv6
+++ b/gluon/gluon-ebtables-filter-multicast/files/lib/gluon/ebtables/110-mcast-allow-dhcpv6
@@ -1 +1 @@
-rule 'MULTICAST_OUT -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j RETURN'
+rule 'MULTICAST_OUT -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j RETURN'
diff --git a/gluon/gluon-ebtables-filter-ra-dhcp/files/lib/gluon/ebtables/200-dir-dhcpv6 b/gluon/gluon-ebtables-filter-ra-dhcp/files/lib/gluon/ebtables/200-dir-dhcpv6
index d433cdd..470a764 100644
--- a/gluon/gluon-ebtables-filter-ra-dhcp/files/lib/gluon/ebtables/200-dir-dhcpv6
+++ b/gluon/gluon-ebtables-filter-ra-dhcp/files/lib/gluon/ebtables/200-dir-dhcpv6
@@ -1,5 +1,5 @@
-rule 'FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j OUT_ONLY'
-rule 'OUTPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j OUT_ONLY'
+rule 'FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j OUT_ONLY'
+rule 'OUTPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j OUT_ONLY'
 
-rule 'FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j IN_ONLY'
-rule 'INPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j IN_ONLY'
+rule 'FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j IN_ONLY'
+rule 'INPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j IN_ONLY'