diff --git a/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp-duid.c b/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp-duid.c
index e664a4a720..28abddfbc5 100644
--- a/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp-duid.c
+++ b/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp-duid.c
@@ -193,6 +193,7 @@ int sd_dhcp_duid_set_en(sd_dhcp_duid *duid) {
         return 0;
 }
 
+#if 0  /* NM_IGNORED */
 int sd_dhcp_duid_set_uuid(sd_dhcp_duid *duid) {
         sd_id128_t machine_id;
         int r;
@@ -209,6 +210,7 @@ int sd_dhcp_duid_set_uuid(sd_dhcp_duid *duid) {
         duid->size = offsetof(struct duid, uuid.uuid) + sizeof(machine_id);
         return 0;
 }
+#endif /* NM_IGNORED */
 
 int dhcp_duid_to_string_internal(uint16_t type, const void *data, size_t data_size, char **ret) {
         _cleanup_free_ char *p = NULL, *x = NULL;
diff --git a/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp6-client.c b/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp6-client.c
index 7c20116409..a6b55d07e0 100644
--- a/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libnm-systemd-core/src/libsystemd-network/sd-dhcp6-client.c
@@ -244,6 +244,7 @@ int sd_dhcp6_client_set_duid_en(sd_dhcp6_client *client) {
         return 0;
 }
 
+#if 0  /* NM_IGNORED */
 int sd_dhcp6_client_set_duid_uuid(sd_dhcp6_client *client) {
         int r;
 
@@ -256,6 +257,7 @@ int sd_dhcp6_client_set_duid_uuid(sd_dhcp6_client *client) {
 
         return 0;
 }
+#endif /* NM_IGNORED */
 
 int sd_dhcp6_client_set_duid_raw(sd_dhcp6_client *client, uint16_t duid_type, const uint8_t *duid, size_t duid_len) {
         int r;