+static bool disabled[8] = {false};
+static bool skip_timeout;
+
+/*
+ * sandbox_eth_disable_response()
+ *
+ * index - The alias index (also DM seq number)
+ * disable - If non-zero, ignore sent packets and don't send mock response
+ */
+void sandbox_eth_disable_response(int index, bool disable)
+{
+ disabled[index] = disable;
+}
+
+/*
+ * sandbox_eth_skip_timeout()
+ *
+ * When the first packet read is attempted, fast-forward time
+ */
+void sandbox_eth_skip_timeout(void)
+{
+ skip_timeout = true;
+}
+