diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c index 01874fe273e..b895bd4f284 100644 --- a/src/openvpn/socket.c +++ b/src/openvpn/socket.c @@ -467,9 +467,8 @@ openvpn_getaddrinfo(unsigned int flags, sig_info = &sigrec; } - /* try numeric ipv6 addr first */ + /* try numeric ip addr first */ CLEAR(hints); - hints.ai_family = ai_family; hints.ai_flags = AI_NUMERICHOST; if (flags & GETADDR_PASSIVE) @@ -486,6 +485,13 @@ openvpn_getaddrinfo(unsigned int flags, hints.ai_socktype = SOCK_STREAM; } + /* if hostname is not set, we want to bind to 'ANY', with + * the correct address family - v4-only or v6/v6-dual-stack */ + if (!hostname) + { + hints.ai_family = ai_family; + } + status = getaddrinfo(hostname, servname, &hints, res); if (status != 0) /* parse as numeric address failed? */ @@ -497,6 +503,10 @@ openvpn_getaddrinfo(unsigned int flags, const char *fmt; int level = 0; + /* this is not a numeric IP, therefore force resolution using the + * provided ai_family */ + hints.ai_family = ai_family; + if (hostname && (flags & GETADDR_RANDOMIZE)) { hostname = hostname_randomize(hostname, &gc); @@ -1690,6 +1700,10 @@ resolve_bind_local(struct link_socket *sock, const sa_family_t af) sock->local_host, sock->local_port, gai_strerror(status)); } + + /* the resolved 'local entry' might have a different family than what + * was globally configured */ + sock->info.af = sock->info.lsa->bind_local->ai_family; } gc_free(&gc);