diff --git a/src/app/config/config.c b/src/app/config/config.c
index cbca7d3899..aa5c92e4e1 100644
--- a/src/app/config/config.c
+++ b/src/app/config/config.c
@@ -809,9 +809,6 @@ static int normalize_nickname_list(config_line_t **normalized_out,
                                    char **msg);
 static char *get_bindaddr_from_transport_listen_line(const char *line,
                                                      const char *transport);
-static int parse_ports(or_options_t *options, int validate_only,
-                              char **msg_out, int *n_ports_out,
-                              int *world_writable_control_socket);
 static int check_server_ports(const smartlist_t *ports,
                               const or_options_t *options,
                               int *num_low_ports_out);
@@ -7370,7 +7367,7 @@ count_real_listeners(const smartlist_t *ports, int listenertype,
  * If <b>validate_only</b> is false, set configured_client_ports to the
  * new list of ports parsed from <b>options</b>.
  **/
-static int
+STATIC int
 parse_ports(or_options_t *options, int validate_only,
             char **msg, int *n_ports_out,
             int *world_writable_control_socket)
diff --git a/src/app/config/config.h b/src/app/config/config.h
index 301faf7067..6852d352dc 100644
--- a/src/app/config/config.h
+++ b/src/app/config/config.h
@@ -295,6 +295,10 @@ STATIC int open_and_add_file_log(const log_severity_list_t *severity,
                                  const char *fname,
                                  int truncate_log);
 
+STATIC int parse_ports(or_options_t *options, int validate_only,
+                       char **msg, int *n_ports_out,
+                       int *world_writable_control_socket);
+
 #endif /* defined(CONFIG_PRIVATE) */
 
 #endif /* !defined(TOR_CONFIG_H) */
diff --git a/src/test/test_config.c b/src/test/test_config.c
index 855725411a..d648666f6e 100644
--- a/src/test/test_config.c
+++ b/src/test/test_config.c
@@ -4860,6 +4860,71 @@ test_config_parse_port_config__ports__server_options(void *data)
   config_free_lines(config_port_valid); config_port_valid = NULL;
 }
 
+static void
+test_config_get_first_advertised(void *data)
+{
+  (void)data;
+  int r, w=0, n=0;
+  char *msg=NULL;
+  or_options_t *opts = options_new();
+  int port;
+  const tor_addr_t *addr;
+
+  // no ports are configured? We get NULL.
+  port = get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET);
+  tt_int_op(port, OP_EQ, 0);
+  addr = get_first_advertised_addr_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET);
+  tt_ptr_op(addr, OP_EQ, NULL);
+
+  port = get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET6);
+  tt_int_op(port, OP_EQ, 0);
+  addr = get_first_advertised_addr_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET6);
+  tt_ptr_op(addr, OP_EQ, NULL);
+
+  config_line_append(&opts->ORPort_lines, "ORPort", "[1234::5678]:8080");
+  config_line_append(&opts->ORPort_lines, "ORPort",
+                     "1.2.3.4:9999 noadvertise");
+  config_line_append(&opts->ORPort_lines, "ORPort",
+                     "5.6.7.8:9911 nolisten");
+
+  r = parse_ports(opts, 0, &msg, &n, &w);
+  tt_assert(r == 0);
+
+  // UNSPEC gets us nothing.
+  port = get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_UNSPEC);
+  tt_int_op(port, OP_EQ, 0);
+  addr = get_first_advertised_addr_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_UNSPEC);
+  tt_ptr_op(addr, OP_EQ, NULL);
+
+  // Try AF_INET.
+  port = get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET);
+  tt_int_op(port, OP_EQ, 9911);
+  addr = get_first_advertised_addr_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET);
+  tt_ptr_op(addr, OP_NE, NULL);
+  tt_str_op(fmt_addrport(addr,port), OP_EQ, "5.6.7.8:9911");
+
+  // Try AF_INET6
+  port = get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET6);
+  tt_int_op(port, OP_EQ, 8080);
+  addr = get_first_advertised_addr_by_type_af(CONN_TYPE_OR_LISTENER,
+                                              AF_INET6);
+  tt_ptr_op(addr, OP_NE, NULL);
+  tt_str_op(fmt_addrport(addr,port), OP_EQ, "[1234::5678]:8080");
+
+ done:
+  or_options_free(opts);
+  config_free_all();
+}
+
 static void
 test_config_parse_log_severity(void *data)
 {
@@ -5920,6 +5985,7 @@ struct testcase_t config_tests[] = {
   CONFIG_TEST(parse_port_config__ports__no_ports_given, 0),
   CONFIG_TEST(parse_port_config__ports__server_options, 0),
   CONFIG_TEST(parse_port_config__ports__ports_given, 0),
+  CONFIG_TEST(get_first_advertised, TT_FORK),
   CONFIG_TEST(parse_log_severity, 0),
   CONFIG_TEST(include_limit, 0),
   CONFIG_TEST(include_does_not_exist, 0),