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diff --git a/configure.ac b/configure.ac
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index 3b5836ff..daeee728 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -546,6 +546,11 @@ if test "x$enable_samba" != "xno"; then
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   if test "x$msg_samba" = "xyes"; then
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     PKG_CHECK_MODULES([SAMBA], [smbclient])
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     AC_DEFINE([HAVE_SAMBA], 1, [Define to 1 if you have the samba libraries])
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+
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+    AC_CHECK_LIB(smbclient, smbc_setOptionProtocols,
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+        AC_DEFINE(HAVE_SMBC_SETOPTIONPROTOCOLS, 1, [Define to 1 if smbc_setOptionProtocols() is available]),
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+        []
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+    )
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   fi
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 fi
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diff --git a/daemon/gvfsbackendsmbbrowse.c b/daemon/gvfsbackendsmbbrowse.c
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index f08d2988..3b11883e 100644
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--- a/daemon/gvfsbackendsmbbrowse.c
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+++ b/daemon/gvfsbackendsmbbrowse.c
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@@ -45,6 +45,7 @@
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 #include "gvfskeyring.h"
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 #include "gmounttracker.h"
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 #include "gvfsbackendsmbprivate.h"
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+#include "gvfsutils.h"
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 #include <libsmbclient.h>
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@@ -847,6 +848,47 @@ do_mount (GVfsBackend *backend,
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   else
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     op_backend->server = g_strdup (op_backend->mounted_server);
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+#ifdef HAVE_SMBC_SETOPTIONPROTOCOLS
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+  /* Force NT1 protocol version if server can't be resolved (i.e. is not
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+   * hostname, nor IP address). This is needed for workgroup support, because
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+   * "client max protocol" has been changed from NT1 to SMB3 in recent samba
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+   * versions.
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+   */
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+
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+  if (op_backend->server != NULL)
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+    {
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+      GResolver *resolver;
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+      GList *addresses;
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+      GError *error = NULL;
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+      gchar *server;
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+
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+      resolver = g_resolver_get_default ();
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+
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+      /* IPv6 server includes brackets in GMountSpec, GResolver doesn't */
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+      if (gvfs_is_ipv6 (op_backend->server))
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+        server = g_strndup (op_backend->server + 1, strlen (op_backend->server) - 2);
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+      else
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+        server = g_strdup (op_backend->server);
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+
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+      addresses = g_resolver_lookup_by_name (resolver, server, NULL, &error);
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+      if (addresses == NULL)
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+        {
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+          if (error != NULL)
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+            {
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+              g_debug ("%s\n", error->message);
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+              g_error_free (error);
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+            }
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+
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+          g_debug ("Forcing NT1 protocol version\n");
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+          smbc_setOptionProtocols (smb_context, "NT1", "NT1");
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+        }
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+
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+      g_resolver_free_addresses (addresses);
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+      g_object_unref (resolver);
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+      g_free (server);
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+    }
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+#endif
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+
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   icon = NULL;
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   symbolic_icon = NULL;
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   if (op_backend->server == NULL)
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diff --git a/meson.build b/meson.build
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index 34600188..3a876172 100644
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--- a/meson.build
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+++ b/meson.build
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@@ -416,6 +416,8 @@ config_h.set10('HAVE_LIBUSB', enable_libusb)
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 enable_samba = get_option('smb')
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 if enable_samba
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   smbclient_dep = dependency('smbclient')
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+
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+  config_h.set('HAVE_SMBC_SETOPTIONPROTOCOLS', cc.has_function('smbc_setOptionProtocols', dependencies: smbclient_dep))
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 endif
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 # *** Check for libarchive ***