socket: multiaddr: Support IPv4 + IPv6 addresses in SCTP associations
The function is improved to support AF_INET:v4->v4, AF_INET6:v6->v6 and
AF_UNSPEC:v4+v6->v4+v6.
Unit tests for the function are added to make sure function behaves
correctly in several scenarios.
Change-Id: I36d8ab85d92bba4d6adb83bc1875eb61094ed2ef
diff --git a/src/socket.c b/src/socket.c
index 9c421da..4d6f389 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -79,7 +79,7 @@
hints.ai_socktype = type;
hints.ai_protocol = proto;
}
-
+ hints.ai_flags = AI_ADDRCONFIG;
if (passive)
hints.ai_flags |= AI_PASSIVE;
@@ -428,24 +428,63 @@
#ifdef HAVE_LIBSCTP
+/* Check whether there's an IPv6 Addr as first option of any addrinfo item in the addrinfo set */
+static void addrinfo_has_v4v6addr(const struct addrinfo **result, size_t result_count, bool *has_v4, bool *has_v6)
+{
+ size_t host_idx;
+ *has_v4 = false;
+ *has_v6 = false;
+
+ for (host_idx = 0; host_idx < result_count; host_idx++) {
+ if (result[host_idx]->ai_family == AF_INET)
+ *has_v4 = true;
+ else if (result[host_idx]->ai_family == AF_INET6)
+ *has_v6 = true;
+ }
+}
+
+static int socket_helper_multiaddr(uint16_t family, uint16_t type, uint8_t proto, unsigned int flags)
+{
+ int sfd, on = 1;
+
+ sfd = socket(family, type, proto);
+ if (sfd == -1) {
+ LOGP(DLGLOBAL, LOGL_ERROR,
+ "Unable to create socket: %s\n", strerror(errno));
+ return sfd;
+ }
+ if (flags & OSMO_SOCK_F_NONBLOCK) {
+ if (ioctl(sfd, FIONBIO, (unsigned char *)&on) < 0) {
+ LOGP(DLGLOBAL, LOGL_ERROR,
+ "Cannot set this socket unblocking: %s\n",
+ strerror(errno));
+ close(sfd);
+ sfd = -EINVAL;
+ }
+ }
+ return sfd;
+}
/* Build array of addresses taking first addrinfo result of the requested family
- * for each host in hosts. addrs4 or addrs6 are filled based on family type. */
+ * for each host in addrs_buf. */
static int addrinfo_to_sockaddr(uint16_t family, const struct addrinfo **result,
const char **hosts, int host_cont,
- struct sockaddr_in *addrs4, struct sockaddr_in6 *addrs6) {
- size_t host_idx;
+ uint8_t *addrs_buf, size_t addrs_buf_len) {
+ size_t host_idx, offset = 0;
const struct addrinfo *rp;
- OSMO_ASSERT(family == AF_INET || family == AF_INET6);
for (host_idx = 0; host_idx < host_cont; host_idx++) {
+ /* Addresses are ordered based on RFC 3484, see man getaddrinfo */
for (rp = result[host_idx]; rp != NULL; rp = rp->ai_next) {
- if (rp->ai_family != family)
+ if (family != AF_UNSPEC && rp->ai_family != family)
continue;
- if (family == AF_INET)
- memcpy(&addrs4[host_idx], rp->ai_addr, sizeof(addrs4[host_idx]));
- else
- memcpy(&addrs6[host_idx], rp->ai_addr, sizeof(addrs6[host_idx]));
+ if (offset + rp->ai_addrlen > addrs_buf_len) {
+ LOGP(DLGLOBAL, LOGL_ERROR, "Output buffer to small: %zu\n",
+ addrs_buf_len);
+ return -ENOSPC;
+ }
+ memcpy(addrs_buf + offset, rp->ai_addr, rp->ai_addrlen);
+ offset += rp->ai_addrlen;
break;
}
if (!rp) { /* No addr could be bound for this host! */
@@ -486,25 +525,20 @@
struct addrinfo *res_loc[OSMO_SOCK_MAX_ADDRS], *res_rem[OSMO_SOCK_MAX_ADDRS];
int sfd = -1, rc, on = 1;
int i;
- struct sockaddr_in addrs4[OSMO_SOCK_MAX_ADDRS];
- struct sockaddr_in6 addrs6[OSMO_SOCK_MAX_ADDRS];
- struct sockaddr *addrs;
+ bool loc_has_v4addr, rem_has_v4addr;
+ bool loc_has_v6addr, rem_has_v6addr;
+ struct sockaddr_in6 addrs_buf[OSMO_SOCK_MAX_ADDRS];
char strbuf[512];
+ /* updated later in case of AF_UNSPEC */
+ loc_has_v4addr = rem_has_v4addr = (family == AF_INET);
+ loc_has_v6addr = rem_has_v6addr = (family == AF_INET6);
+
/* TODO: So far this function is only aimed for SCTP, but could be
reused in the future for other protocols with multi-addr support */
if (proto != IPPROTO_SCTP)
return -ENOTSUP;
- /* TODO: Let's not support AF_UNSPEC for now. sctp_bindx() actually
- supports binding both types of addresses on a AF_INET6 soscket, but
- that would mean we could get both AF_INET and AF_INET6 addresses for
- each host, and makes complexity of this function increase a lot since
- we'd need to find out which subsets to use, use v4v6 mapped socket,
- etc. */
- if (family == AF_UNSPEC)
- return -ENOTSUP;
-
if ((flags & (OSMO_SOCK_F_BIND | OSMO_SOCK_F_CONNECT)) == 0) {
LOGP(DLGLOBAL, LOGL_ERROR, "invalid: you have to specify either "
"BIND or CONNECT flags\n");
@@ -523,6 +557,10 @@
local_hosts_cnt, local_port, true);
if (rc < 0)
return -EINVAL;
+ /* Figure out if there's any IPV4 or IPv6 addr in the set */
+ if (family == AF_UNSPEC)
+ addrinfo_has_v4v6addr((const struct addrinfo **)res_loc, local_hosts_cnt,
+ &loc_has_v4addr, &loc_has_v6addr);
}
/* figure out remote side of socket */
if (flags & OSMO_SOCK_F_CONNECT) {
@@ -530,22 +568,27 @@
remote_hosts_cnt, remote_port, false);
if (rc < 0)
return -EINVAL;
+ /* Figure out if there's any IPv4 or IPv6 addr in the set */
+ if (family == AF_UNSPEC)
+ addrinfo_has_v4v6addr((const struct addrinfo **)res_rem, remote_hosts_cnt,
+ &rem_has_v4addr, &rem_has_v6addr);
}
- /* figure out local side of socket */
+ if (((flags & OSMO_SOCK_F_BIND) && (flags & OSMO_SOCK_F_CONNECT)) &&
+ (loc_has_v4addr != rem_has_v4addr || loc_has_v6addr != rem_has_v6addr)) {
+ LOGP(DLGLOBAL, LOGL_ERROR, "Invalid v4 vs v6 in local vs remote addresses\n");
+ rc = -EINVAL;
+ goto ret_freeaddrinfo;
+ }
+
+ sfd = socket_helper_multiaddr(loc_has_v6addr ? AF_INET6 : AF_INET,
+ type, proto, flags);
+ if (sfd < 0) {
+ rc = sfd;
+ goto ret_freeaddrinfo;
+ }
+
if (flags & OSMO_SOCK_F_BIND) {
-
- /* Since addrinfo_helper sets ai_family, socktype and
- ai_protocol in hints, we know all results will use same
- values, so simply pick the first one and pass it to create
- the socket:
- */
- sfd = socket_helper(res_loc[0], flags);
- if (sfd < 0) {
- rc = sfd;
- goto ret_freeaddrinfo;
- }
-
/* Since so far we only allow IPPROTO_SCTP in this function,
no need to check below for "proto != IPPROTO_UDP || flags & OSMO_SOCK_F_UDP_REUSEADDR" */
rc = setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR,
@@ -560,21 +603,20 @@
goto ret_close;
}
- /* Build array of addresses taking first of same family for each host.
+ /* Build array of addresses taking first entry for each host.
TODO: Ideally we should use backtracking storing last used
indexes and trying next combination if connect() fails .*/
+ /* We could alternatively use v4v6 mapped addresses and call sctp_bindx once with an array od sockaddr_in6 */
rc = addrinfo_to_sockaddr(family, (const struct addrinfo **)res_loc,
- local_hosts, local_hosts_cnt, addrs4, addrs6);
+ local_hosts, local_hosts_cnt,
+ (uint8_t*)addrs_buf, sizeof(addrs_buf));
if (rc < 0) {
rc = -ENODEV;
goto ret_close;
}
- if (family == AF_INET)
- addrs = (struct sockaddr *)addrs4;
- else
- addrs = (struct sockaddr *)addrs6;
- if (sctp_bindx(sfd, addrs, local_hosts_cnt, SCTP_BINDX_ADD_ADDR) == -1) {
+ rc = sctp_bindx(sfd, (struct sockaddr *)addrs_buf, local_hosts_cnt, SCTP_BINDX_ADD_ADDR);
+ if (rc == -1) {
multiaddr_snprintf(strbuf, sizeof(strbuf), local_hosts, local_hosts_cnt);
LOGP(DLGLOBAL, LOGL_NOTICE, "unable to bind socket: %s:%u: %s\n",
strbuf, local_port, strerror(errno));
@@ -583,40 +625,19 @@
}
}
- /* Reached this point, if OSMO_SOCK_F_BIND then sfd is valid (>=0) or it
- was already closed and func returned. If OSMO_SOCK_F_BIND is not
- set, then sfd = -1 */
-
- /* figure out remote side of socket */
if (flags & OSMO_SOCK_F_CONNECT) {
- if (sfd < 0) {
- /* Since addrinfo_helper sets ai_family, socktype and
- ai_protocol in hints, we know all results will use same
- values, so simply pick the first one and pass it to create
- the socket:
- */
- sfd = socket_helper(res_rem[0], flags);
- if (sfd < 0) {
- rc = sfd;
- goto ret_freeaddrinfo;
- }
- }
-
/* Build array of addresses taking first of same family for each host.
TODO: Ideally we should use backtracking storing last used
indexes and trying next combination if connect() fails .*/
rc = addrinfo_to_sockaddr(family, (const struct addrinfo **)res_rem,
- remote_hosts, remote_hosts_cnt, addrs4, addrs6);
+ remote_hosts, remote_hosts_cnt,
+ (uint8_t*)addrs_buf, sizeof(addrs_buf));
if (rc < 0) {
rc = -ENODEV;
goto ret_close;
}
- if (family == AF_INET)
- addrs = (struct sockaddr *)addrs4;
- else
- addrs = (struct sockaddr *)addrs6;
- rc = sctp_connectx(sfd, addrs, remote_hosts_cnt, NULL);
+ rc = sctp_connectx(sfd, (struct sockaddr *)addrs_buf, remote_hosts_cnt, NULL);
if (rc != 0 && errno != EINPROGRESS) {
multiaddr_snprintf(strbuf, sizeof(strbuf), remote_hosts, remote_hosts_cnt);
LOGP(DLGLOBAL, LOGL_ERROR, "unable to connect socket: %s:%u: %s\n",
diff --git a/tests/socket/socket_test.c b/tests/socket/socket_test.c
index e68243c..1d4253c 100644
--- a/tests/socket/socket_test.c
+++ b/tests/socket/socket_test.c
@@ -23,6 +23,7 @@
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
+#include <inttypes.h>
#include <sys/socket.h>
#include <arpa/inet.h>
@@ -32,6 +33,7 @@
#include <osmocom/core/utils.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/logging.h>
+#include <osmocom/core/bits.h>
#include "../config.h"
@@ -146,6 +148,175 @@
return 0;
}
+#ifdef HAVE_LIBSCTP
+static uint16_t sock_get_local_port(int fd, bool is_v6) {
+ struct sockaddr_storage sa;
+ struct sockaddr_in *sin = (struct sockaddr_in *)&sa;
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&sa;
+ socklen_t len = sizeof(sa);
+ int local_port;
+
+ OSMO_ASSERT(getsockname(fd, (struct sockaddr*)&sa, &len) == 0);
+ if(!is_v6)
+ local_port = osmo_load16be(&sin->sin_port);
+ else
+ local_port = osmo_load16be(&sin6->sin6_port);
+ //printf("Checking osmo_sock_init2_multiaddr() port: %" PRIu16 "\n", listen_port_v4);
+ return local_port;
+}
+
+/* Test API osmo_sock_init2_multiaddr with 1 local/remote address */
+static int test_sockinit2_multiaddr(const char **addrv4_loc, const char **addrv6_loc,
+ const char **addrv4_rem, const char **addrv6_rem,
+ size_t addrv4_size, size_t addrv6_size)
+{
+ int fd, rc;
+ int listen_fd_v4, listen_fd_v6;
+ int listen_port_v4, listen_port_v6;
+
+ printf("Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv4 port\n");
+
+ listen_fd_v4 = osmo_sock_init2_multiaddr(AF_INET, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_loc, addrv4_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND);
+ OSMO_ASSERT(listen_fd_v4 >= 0);
+ /* expect it to be blocking */
+ rc = fcntl(listen_fd_v4, F_GETFL);
+ OSMO_ASSERT(!(rc & O_NONBLOCK));
+
+ listen_port_v4 = sock_get_local_port(listen_fd_v4, false);
+
+ printf("Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv6 port\n");
+
+ listen_fd_v6 = osmo_sock_init2_multiaddr(AF_INET6, SOCK_STREAM, IPPROTO_SCTP,
+ addrv6_loc, addrv6_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND);
+ OSMO_ASSERT(listen_fd_v6 >= 0);
+ /* expect it to be blocking */
+ rc = fcntl(listen_fd_v6, F_GETFL);
+ OSMO_ASSERT(!(rc & O_NONBLOCK));
+
+ listen_port_v6 = sock_get_local_port(listen_fd_v6, true);
+
+ printf("Checking osmo_sock_init2_multiaddr() for OSMO_SOCK_F_NONBLOCK\n");
+ fd = osmo_sock_init2_multiaddr(AF_INET, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_loc, addrv4_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND|OSMO_SOCK_F_NONBLOCK);
+ OSMO_ASSERT(fd >= 0);
+ /* expect it to be blocking */
+ rc = fcntl(fd, F_GETFL);
+ OSMO_ASSERT(rc & O_NONBLOCK);
+ close(fd);
+
+ printf("Checking osmo_sock_init2_multiaddr() for invalid flags\n");
+ fd = osmo_sock_init2_multiaddr(AF_INET, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_loc, addrv4_size, 0,
+ NULL, 0, 0, 0);
+ OSMO_ASSERT(fd < 0);
+
+ printf("Checking osmo_sock_init2_multiaddr() for combined BIND + CONNECT\n");
+ fd = osmo_sock_init2_multiaddr(AF_INET, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_rem, addrv4_size, 0,
+ addrv4_rem, addrv4_size, listen_port_v4,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd >= 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv4 & IPv6\n");
+ fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_rem, addrv4_size, 0,
+ addrv6_rem, addrv6_size, listen_port_v6,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd < 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv6 & IPv4\n");
+ fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addrv6_rem, addrv6_size, 0,
+ addrv4_rem, addrv4_size, listen_port_v4,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd < 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv4\n");
+ fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addrv4_rem, addrv4_size, 0,
+ addrv4_rem, addrv4_size, listen_port_v4,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd >= 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv6\n");
+ fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addrv6_rem, addrv6_size, 0,
+ addrv6_rem, addrv6_size, listen_port_v6,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd >= 0);
+
+ close(listen_fd_v4);
+ close(listen_fd_v6);
+ printf("Done\n");
+ return 0;
+}
+
+/* Test API osmo_sock_init2_multiaddr with 1 local/remote address */
+static int test_sockinit2_multiaddr_simple(void)
+{
+ const char *addrv4_loc[] = { "0.0.0.0" };
+ const char *addrv6_loc[] = { "::" };
+ const char *addrv4_rem[] = { "127.0.0.1" };
+ const char *addrv6_rem[] = { "::1" };
+
+ return test_sockinit2_multiaddr(addrv4_loc, addrv6_loc,
+ addrv4_rem, addrv6_rem, 1, 1);
+}
+
+/* Test API osmo_sock_init2_multiaddr with several local/remote address */
+static int test_sockinit2_multiaddr_several(void)
+{
+ const char *addrv4_localhost[] = { "127.0.0.1", "127.0.0.2" };
+ const char *addrv6_localhost[] = { "::1" };
+
+ return test_sockinit2_multiaddr(addrv4_localhost, addrv6_localhost,
+ addrv4_localhost, addrv6_localhost, 2, 1);
+}
+
+/* Test API osmo_sock_init2_multiaddr with several local/remote address, using both ipv4+v6 */
+static int test_sockinit2_multiaddr_mixed(void)
+{
+ const char *addr_localhost[] = { "127.0.0.1", "127.0.0.2", "::1" };
+ size_t addr_size = ARRAY_SIZE(addr_localhost);
+
+ int listen_fd, listen_port, fd;
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_INET IPv4+v6 fails\n");
+ listen_fd = osmo_sock_init2_multiaddr(AF_INET, SOCK_STREAM, IPPROTO_SCTP,
+ addr_localhost, addr_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND);
+ OSMO_ASSERT(listen_fd < 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_INET6 IPv4+v6 fails\n");
+ listen_fd = osmo_sock_init2_multiaddr(AF_INET6, SOCK_STREAM, IPPROTO_SCTP,
+ addr_localhost, addr_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND);
+ OSMO_ASSERT(listen_fd < 0);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_UNSPEC IPv4+v6 succeeds\n");
+ listen_fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addr_localhost, addr_size, 0,
+ NULL, 0, 0, OSMO_SOCK_F_BIND);
+ OSMO_ASSERT(listen_fd >= 0);
+
+ listen_port = sock_get_local_port(listen_fd, true);
+
+ printf("Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv4\n");
+ fd = osmo_sock_init2_multiaddr(AF_UNSPEC, SOCK_STREAM, IPPROTO_SCTP,
+ addr_localhost, addr_size, 0,
+ addr_localhost, addr_size, listen_port,
+ OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT);
+ OSMO_ASSERT(fd >= 0);
+ close(fd);
+
+ close(listen_fd);
+ return 0;
+}
+#endif /* ifdef HAVE_LIBSCTP */
const struct log_info_cat default_categories[] = {
};
@@ -164,6 +335,11 @@
test_sockinit();
test_sockinit2();
+#ifdef HAVE_LIBSCTP
+ test_sockinit2_multiaddr_simple();
+ test_sockinit2_multiaddr_several();
+ test_sockinit2_multiaddr_mixed();
+#endif /* ifdef HAVE_LIBSCTP */
return EXIT_SUCCESS;
}
diff --git a/tests/socket/socket_test.err b/tests/socket/socket_test.err
index 0f0f8da..3c5dac5 100644
--- a/tests/socket/socket_test.err
+++ b/tests/socket/socket_test.err
@@ -2,3 +2,11 @@
invalid: you have to specify either BIND or CONNECT flags
Unable to find a common protocol (IPv4 or IPv6) for local host: 127.0.0.1 and remote host: ::1.
Unable to find a common protocol (IPv4 or IPv6) for local host: ::1 and remote host: 127.0.0.1.
+invalid: you have to specify either BIND or CONNECT flags
+Invalid v4 vs v6 in local vs remote addresses
+Invalid v4 vs v6 in local vs remote addresses
+invalid: you have to specify either BIND or CONNECT flags
+Invalid v4 vs v6 in local vs remote addresses
+Invalid v4 vs v6 in local vs remote addresses
+getaddrinfo returned NULL: ::1:0: Transport endpoint is not connected
+getaddrinfo returned NULL: 127.0.0.1:0: Transport endpoint is not connected
diff --git a/tests/socket/socket_test.ok b/tests/socket/socket_test.ok
index 4265be8..959fa84 100644
--- a/tests/socket/socket_test.ok
+++ b/tests/socket/socket_test.ok
@@ -9,3 +9,27 @@
Checking osmo_sock_init2(AF_UNSPEC) must fail on mixed IPv6 & IPv4
Checking osmo_sock_init2(AF_UNSPEC) BIND + CONNECT on IPv4
Checking osmo_sock_init2(AF_UNSPEC) BIND + CONNECT on IPv6
+Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv4 port
+Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv6 port
+Checking osmo_sock_init2_multiaddr() for OSMO_SOCK_F_NONBLOCK
+Checking osmo_sock_init2_multiaddr() for invalid flags
+Checking osmo_sock_init2_multiaddr() for combined BIND + CONNECT
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv4 & IPv6
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv6 & IPv4
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv4
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv6
+Done
+Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv4 port
+Checking osmo_sock_init2_multiaddr() with bind to a random local SCTP IPv6 port
+Checking osmo_sock_init2_multiaddr() for OSMO_SOCK_F_NONBLOCK
+Checking osmo_sock_init2_multiaddr() for invalid flags
+Checking osmo_sock_init2_multiaddr() for combined BIND + CONNECT
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv4 & IPv6
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) must fail on mixed IPv6 & IPv4
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv4
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv6
+Done
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_INET IPv4+v6 fails
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_INET6 IPv4+v6 fails
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND on AF_UNSPEC IPv4+v6 succeeds
+Checking osmo_sock_init2_multiaddr(AF_UNSPEC) BIND + CONNECT on IPv4