diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 694d9b0c3a..d34155b19f 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -501,6 +501,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
                         "DHCP\0" /* compat */
                         "DHCPv4\0"
                         "DHCPv6\0"
+                        "DHCPv6PrefixDelegation\0"
                         "DHCPServer\0"
                         "IPv6AcceptRA\0"
                         "IPv6NDPProxyAddress\0"