Fix dumb mistake in patch before last; epoll timeout is in ms, not s.

src/ndhc.c

@@ -412,7 +412,7 @@ static void do_ndhc_work(void)
 
         // Failsafe to prevent busy-spin.
         if (prev_timeout == 0 && !had_event)
-            timeout = 10;
+            timeout = 10000;
     }
 }