diff -ur grub-2.04.orig/grub-core/net/drivers/efi/efinet.c grub-2.04/grub-core/net/drivers/efi/efinet.c
--- grub-2.04.orig/grub-core/net/drivers/efi/efinet.c	2019-08-18 15:57:09.662000000 +0200
+++ grub-2.04/grub-core/net/drivers/efi/efinet.c	2019-08-18 15:57:25.366000000 +0200
@@ -330,6 +330,7 @@
 {
   struct grub_net_card *card;
   grub_efi_device_path_t *dp;
+  grub_efi_simple_network_t *net;
 
   dp = grub_efi_get_device_path (hnd);
   if (! dp)
@@ -383,6 +384,21 @@
 				    &pxe_mode->dhcp_ack,
 				    sizeof (pxe_mode->dhcp_ack),
 				    1, device, path);
+    net = grub_efi_open_protocol (card->efi_handle, &net_io_guid,
+				  GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE);
+    if (net) {
+      if (net->mode->state == GRUB_EFI_NETWORK_STOPPED
+	  && efi_call_1 (net->start, net) != GRUB_EFI_SUCCESS)
+	continue;
+
+      if (net->mode->state == GRUB_EFI_NETWORK_STOPPED)
+	continue;
+
+      if (net->mode->state == GRUB_EFI_NETWORK_STARTED
+	  && efi_call_3 (net->initialize, net, 0, 0) != GRUB_EFI_SUCCESS)
+	continue;
+      card->efi_net = net;
+    }
     return;
   }
 }