Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-la0-f48.google.com ([209.85.215.48]:51303 "EHLO mail-la0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751271AbaAPNhD (ORCPT ); Thu, 16 Jan 2014 08:37:03 -0500 Received: by mail-la0-f48.google.com with SMTP id er20so2512371lab.35 for ; Thu, 16 Jan 2014 05:36:59 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20140115133722.GA12243@umich.edu> References: <20140115133722.GA12243@umich.edu> Date: Thu, 16 Jan 2014 05:36:59 -0800 Message-ID: Subject: Re: unable to send TCP SYNs from ports lower than 1024 From: Stuart Kendrick To: Jim Rees Cc: linux-nfs@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: I didn't think of the switch angle ... inserting an in-line tap on either side of the switch ... shows that it is dropping these frames. Thanx for the suggestion --sk On Wed, Jan 15, 2014 at 5:37 AM, Jim Rees wrote: > Stuart Kendrick wrote: > > Is anyone else seeing this? This issue prevents NFS client mounting, > since the NFS client wants to use source ports below 1024 > > It seems pretty unlikely this is actually broken without anyone noticing. > Did you check your iptables and switch acls?