--- xen-4.5.1/tools/qemu-xen-traditional/hw/ne2000.c.orig	2015-09-26 17:27:49.494334726 +0100
+++ xen-4.5.1/tools/qemu-xen-traditional/hw/ne2000.c	2015-09-26 17:31:53.107474932 +0100
@@ -331,7 +331,7 @@
         if (index <= s->stop)
             avail = s->stop - index;
         else
-            avail = 0;
+            break;
         len = size;
         if (len > avail)
             len = avail;