diff -up libvirt-0.5.0/src/xm_internal.c~ libvirt-0.5.0/src/xm_internal.c
--- libvirt-0.5.0/src/xm_internal.c~	2008-11-26 13:47:57.000000000 -0500
+++ libvirt-0.5.0/src/xm_internal.c	2008-11-26 13:54:36.000000000 -0500
@@ -1822,9 +1822,6 @@ static int xenXMDomainConfigFormatNet(vi
         goto cleanup;
     }
 
-    if (hvm)
-        virBufferAddLit(&buf, ",type=ioemu");
-
     if (net->model)
         virBufferVSprintf(&buf, ",model=%s",
                           net->model);
diff -up libvirt-0.5.0/src/xend_internal.c~ libvirt-0.5.0/src/xend_internal.c
--- libvirt-0.5.0/src/xend_internal.c~	2008-11-26 13:47:57.000000000 -0500
+++ libvirt-0.5.0/src/xend_internal.c	2008-11-26 13:57:56.000000000 -0500
@@ -5157,13 +5157,6 @@ xenDaemonFormatSxprNet(virConnectPtr con
     if (def->model != NULL)
         virBufferVSprintf(buf, "(model '%s')", def->model);
 
-    /*
-     * apparently (type ioemu) breaks paravirt drivers on HVM so skip this
-     * from Xen 3.1.0
-     */
-    if ((hvm) && (xendConfigVersion < 4))
-        virBufferAddLit(buf, "(type ioemu)");
-
     if (!isAttach)
         virBufferAddLit(buf, ")");