--- igb_main.c.orig     2016-10-07 10:43:37.855873754 +0200
+++ igb_main.c  2016-10-07 10:31:51.451346292 +0200
@@ -4613,6 +4613,7 @@ no_wait:
        }

        /* Cause software interrupt to ensure Rx ring is cleaned */
+#if 0
        if (adapter->flags & IGB_FLAG_HAS_MSIX) {
                u32 eics = 0;

@@ -4622,6 +4623,7 @@ no_wait:
        } else {
                wr32(E1000_ICS, E1000_ICS_RXDMT0);
        }
+#endif

        igb_spoof_check(adapter);
        igb_ptp_rx_hang(adapter);