--- src/network.c.orig	2017-10-28 14:00:17 UTC

+++ src/network.c

@@ -77,9 +77,13 @@ static void network_host_normalize_addr_

     if (addr->plain.sa_family == AF_INET6)

         buffer_append_string_len(host, CONST_STR_LEN("]"));

     if (addr->plain.sa_family != AF_UNIX) {

+#ifdef HAVE_IPV6

         unsigned short port = (addr->plain.sa_family == AF_INET)

           ? ntohs(addr->ipv4.sin_port)

           : ntohs(addr->ipv6.sin6_port);

+#elif

+	unsigned short port = ntohs(addr->ipv6.sin6_port);

+#endif

         buffer_append_string_len(host, CONST_STR_LEN(":"));

         buffer_append_int(host, (int)port);

     }