+ /*
+ * Catch hangup signals for when the network changes...
+ */
+
+#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
+ sigset(SIGHUP, sighup_handler);
+#elif defined(HAVE_SIGACTION)
+ memset(&action, 0, sizeof(action));
+
+ sigemptyset(&action.sa_mask);
+ sigaddset(&action.sa_mask, SIGHUP);
+ action.sa_handler = sighup_handler;
+ sigaction(SIGHUP, &action, NULL);
+#else
+ signal(SIGHUP, sighup_handler);
+#endif /* HAVE_SIGSET */
+