diff --git a/src/basic/in-addr-util.c b/src/basic/in-addr-util.c
index f0ce6900ef..8783ab3c9b 100644
--- a/src/basic/in-addr-util.c
+++ b/src/basic/in-addr-util.c
@@ -755,13 +755,13 @@ static int in_addr_data_compare_func(const struct in_addr_data *x, const struct
 
 DEFINE_HASH_OPS(in_addr_data_hash_ops, struct in_addr_data, in_addr_data_hash_func, in_addr_data_compare_func);
 
-static void in6_addr_hash_func(const struct in6_addr *addr, struct siphash *state) {
+void in6_addr_hash_func(const struct in6_addr *addr, struct siphash *state) {
         assert(addr);
 
         siphash24_compress(addr, sizeof(*addr), state);
 }
 
-static int in6_addr_compare_func(const struct in6_addr *a, const struct in6_addr *b) {
+int in6_addr_compare_func(const struct in6_addr *a, const struct in6_addr *b) {
         return memcmp(a, b, sizeof(*a));
 }
 
diff --git a/src/basic/in-addr-util.h b/src/basic/in-addr-util.h
index 6ce0bef578..e5df2a8058 100644
--- a/src/basic/in-addr-util.h
+++ b/src/basic/in-addr-util.h
@@ -80,5 +80,8 @@ static inline size_t FAMILY_ADDRESS_SIZE(int family) {
  * See also oss-fuzz#11344. */
 #define IN_ADDR_NULL ((union in_addr_union) { .in6 = {} })
 
+void in6_addr_hash_func(const struct in6_addr *addr, struct siphash *state);
+int in6_addr_compare_func(const struct in6_addr *a, const struct in6_addr *b);
+
 extern const struct hash_ops in_addr_data_hash_ops;
 extern const struct hash_ops in6_addr_hash_ops;