diff --git a/hw/e1000.c b/hw/e1000.c
index e4f1ffe..6478ff3 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -278,6 +278,10 @@ static void e1000_reset(void *opaque)
     if (d->nic->nc.link_down) {
         e1000_link_down(d);
     }
+
+  /* Some guests expect pre-initialized RAH/RAL (AddrValid flag + MACaddr) */
+  d->mac_reg[RA+1] = E1000_RAH_AV;
+  memmove(&d->mac_reg[RA], &d->conf.macaddr, sizeof(struct MACAddr));
 }
 
 static void