mgcp_client: Make MGCP_CLIENT_LOCAL_ADDR_DEFAULT IPv6 compatible
If "0.0.0.0", the default, is passed together with an IPv6 configured
address (ex: "mgw remote-ip ::1") in VTY, socket creation will fail due
to address version mismatch (because getaddrinfo() returns only an IPv4
address in the local result set).
If instead NULL is passed, then 2 entries are returned, one in IPv4 and
one in IPv6, and osmo_sock_init2 is smart enough to take one or another
when passed AF_UNSPEC.
Change-Id: I1be6f3b71486ce1782ba6b8c62f25145b42ec894
diff --git a/include/osmocom/mgcp_client/mgcp_client.h b/include/osmocom/mgcp_client/mgcp_client.h
index 8914cc2..b5a3529 100644
--- a/include/osmocom/mgcp_client/mgcp_client.h
+++ b/include/osmocom/mgcp_client/mgcp_client.h
@@ -6,7 +6,7 @@
#include <osmocom/mgcp_client/mgcp_common.h>
/* See also: RFC 3435, chapter 3.5 Transmission over UDP */
-#define MGCP_CLIENT_LOCAL_ADDR_DEFAULT "0.0.0.0"
+#define MGCP_CLIENT_LOCAL_ADDR_DEFAULT NULL /* INADDR(6)_ANY */
#define MGCP_CLIENT_LOCAL_PORT_DEFAULT 2727
#define MGCP_CLIENT_REMOTE_ADDR_DEFAULT "127.0.0.1"
#define MGCP_CLIENT_REMOTE_PORT_DEFAULT 2427