This keeps Windows driver 12.18.9.23 from generating an event with ID
30. The description of the event is as follows:
> Intel(R) 82574L Gigabit Network Connection
>  PROBLEM: The network adapter is configured for auto-negotiation but
> the link partner is not.  This may result in a duplex mismatch.
>  ACTION: Configure the link partner for auto-negotiation.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/net/e1000e_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index d8c17baf8f..736708407c 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -3426,7 +3426,7 @@ e1000e_phy_reg_init[E1000E_PHY_PAGES][E1000E_PHY_PAGE_SIZE] = {
         [MII_ANLPAR]            = MII_ANLPAR_10 | MII_ANLPAR_10FD |
                                   MII_ANLPAR_TX | MII_ANLPAR_TXFD |
                                   MII_ANLPAR_T4 | MII_ANLPAR_PAUSE,
-        [MII_ANER]              = MII_ANER_NP,
+        [MII_ANER]              = MII_ANER_NP | MII_ANER_NWAY,
         [MII_ANNP]              = 1 | MII_ANNP_MP,
         [MII_CTRL1000]          = MII_CTRL1000_HALF | MII_CTRL1000_FULL |
                                   MII_CTRL1000_PORT | MII_CTRL1000_MASTER,
-- 
2.39.0