diff --git a/src/libsystemd-network/dhcp6-internal.h b/src/libsystemd-network/dhcp6-internal.h
index 31482d7717..f943409856 100644
--- a/src/libsystemd-network/dhcp6-internal.h
+++ b/src/libsystemd-network/dhcp6-internal.h
@@ -11,6 +11,7 @@
 #include "sd-event.h"
 #include "sd-dhcp6-client.h"
 
+#include "dhcp6-protocol.h"
 #include "hashmap.h"
 #include "list.h"
 #include "macro.h"
@@ -130,6 +131,12 @@ int dhcp6_network_bind_udp_socket(int ifindex, struct in6_addr *address);
 int dhcp6_network_send_udp_socket(int s, struct in6_addr *address,
                                   const void *packet, size_t len);
 
+int client_parse_message(
+                sd_dhcp6_client *client,
+                DHCP6Message *message,
+                size_t len,
+                sd_dhcp6_lease *lease);
+
 const char *dhcp6_message_type_to_string(int s) _const_;
 int dhcp6_message_type_from_string(const char *s) _pure_;
 const char *dhcp6_message_status_to_string(int s) _const_;
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 8150227d7e..706904c720 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -1124,7 +1124,7 @@ static int client_ensure_iaid(sd_dhcp6_client *client) {
         return 0;
 }
 
-static int client_parse_message(
+int client_parse_message(
                 sd_dhcp6_client *client,
                 DHCP6Message *message,
                 size_t len,