diff --git a/python-ethtool/etherinfo.c b/python-ethtool/etherinfo.c
index 3f2a3e6..179f593 100644
--- a/python-ethtool/etherinfo.c
+++ b/python-ethtool/etherinfo.c
@@ -21,7 +21,6 @@
 #include <string.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include <fcntl.h>
 #include <stdlib.h>
 #include <asm/types.h>
 #include <sys/socket.h>
@@ -34,6 +33,52 @@
 
 pthread_mutex_t nlc_counter_mtx = PTHREAD_MUTEX_INITIALIZER;
 
+#ifdef LIBNL_1_0
+#define NLHDR_COMMON                            \
+        int                     ce_refcnt;      \
+        struct nl_object_ops *  ce_ops;         \
+        struct nl_cache *       ce_cache;       \
+        struct nl_list_head     ce_list;        \
+        int                     ce_msgtype;     \
+        int                     ce_flags;       \
+        uint32_t                ce_mask;
+
+struct nl_cache
+{
+        struct nl_list_head     c_items;
+        int                     c_nitems;
+        int                     c_iarg1;
+        int                     c_iarg2;
+        struct nl_cache_ops *   c_ops;
+};
+
+struct nl_object
+{
+        NLHDR_COMMON
+};
+
+void nl_cache_free(struct nl_cache *cache)
+{
+        struct nl_object *obj, *tmp;
+
+        if( !cache )
+                return;
+
+        nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list) {
+                struct nl_cache *cache = obj->ce_cache;
+                if( !cache ) {
+                        break;
+                }
+
+                nl_list_del(&obj->ce_list);
+                obj->ce_cache = NULL;
+                nl_object_put(obj);
+                cache->c_nitems--;
+        }
+        free(cache);
+}
+#endif
+
 /*
  *
  *   Internal functions for working with struct etherinfo
@@ -411,13 +456,6 @@ int open_netlink(struct etherinfo_obj_data *data)
 	*data->nlc = nl_handle_alloc();
 	nl_connect(*data->nlc, NETLINK_ROUTE);
 	if( (*data->nlc != NULL) ) {
-		/* Force O_CLOEXEC flag on the NETLINK socket */
-		if( fcntl(nl_socket_get_fd(*data->nlc), F_SETFD, FD_CLOEXEC) == -1 ) {
-			fprintf(stderr,
-				"**WARNING** Failed to set O_CLOEXEC on NETLINK socket: %s\n",
-				strerror(errno));
-		}
-
 		/* Tag this object as an active user */
 		pthread_mutex_lock(&nlc_counter_mtx);
 		(*data->nlc_users)++;
diff --git a/setup.py b/setup.py
index 99dc718..4b2fcf3 100644
--- a/setup.py
+++ b/setup.py
@@ -64,7 +64,8 @@ def _str2list(pkgstr, onlystr):
             include_dirs = libnl['include'],
             library_dirs = libnl['libdirs'],
             libraries = libnl['libs'],
-            define_macros = [('VERSION', '"%s"' % version)]
+            define_macros = [('VERSION', '"%s"' % version),
+                             ('LIBNL_1_0', None)]
             )
         ]
 )