diff --git a/devstack/lib/ironic b/devstack/lib/ironic
index f3a8418b90..d6c06c111c 100644
--- a/devstack/lib/ironic
+++ b/devstack/lib/ironic
@@ -1447,6 +1447,7 @@ function configure_ironic_inspection_network {
 }
 
 function configure_ironic_provision_network {
+    configure_neutron_dhcp_enable_addr6_list
     if [[ "$IRONIC_IP_VERSION" == "6" ]]; then
         # NOTE(TheJulia): Ideally we should let this happen
         # with our global address, but iPXE seems to have in
@@ -1576,6 +1577,13 @@ function configure_neutron_l3_lower_v6_ra {
     iniset $Q_L3_CONF_FILE DEFAULT min_rtr_adv_interval 5
 }
 
+function configure_neutron_dhcp_enable_addr6_list {
+    if is_service_enabled q-dhcp; then
+        iniset $Q_DHCP_CONF_FILE DEFAULT dnsmasq_enable_addr6_list true
+        restart_service devstack@q-dhcp.service
+    fi
+}
+
 # configure_ironic() - Set config files, create data dirs, etc
 function configure_ironic {
     configure_ironic_dirs