From c612108f9ff8b2339e4e191e69e7e7d7175e08b7 Mon Sep 17 00:00:00 2001
From: mikeb <mikeb@openbsd.org>
Date: Mon, 29 Aug 2016 17:35:25 +0000
Subject: [PATCH] Set MTU size to ~4k until the TX path is ready to deal with
 larger packets

---
 sys/dev/pv/if_xnf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/dev/pv/if_xnf.c b/sys/dev/pv/if_xnf.c
index a128899630d..ccc5b57c407 100644
--- a/sys/dev/pv/if_xnf.c
+++ b/sys/dev/pv/if_xnf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_xnf.c,v 1.33 2016/08/29 17:27:04 mikeb Exp $	*/
+/*	$OpenBSD: if_xnf.c,v 1.34 2016/08/29 17:35:25 mikeb Exp $	*/
 
 /*
  * Copyright (c) 2015, 2016 Mike Belopuhov
@@ -290,7 +290,7 @@ xnf_attach(struct device *parent, struct device *self, void *aux)
 	ifp->if_softc = sc;
 
 	if (sc->sc_caps & XNF_CAP_SG)
-		ifp->if_hardmtu = 9000;
+		ifp->if_hardmtu = XNF_MCLEN - ETHER_HDR_LEN;
 
 	ifp->if_capabilities = IFCAP_VLAN_MTU;
 	if (sc->sc_caps & XNF_CAP_CSUM4)
-- 
2.20.1