From owner-freebsd-questions@freebsd.org Mon Feb 26 20:21:15 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 129E0F0388A for ; Mon, 26 Feb 2018 20:21:15 +0000 (UTC) (envelope-from merlyn@stonehenge.com) Received: from 001.las.mailroute.net (001.las.mailroute.net [199.89.4.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.mailroute.net", Issuer "AlphaSSL CA - SHA256 - G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AA73E87890 for ; Mon, 26 Feb 2018 20:21:14 +0000 (UTC) (envelope-from merlyn@stonehenge.com) Received: from localhost (localhost.localdomain [127.0.0.1]) by 001.las.mailroute.net (Postfix) with ESMTP id 3zqtWR2XXbz8sXy; Mon, 26 Feb 2018 20:21:07 +0000 (UTC) X-Virus-Scanned: by MailRoute Received: from 001.las.mailroute.net ([199.89.4.4]) by localhost (001.las.mailroute.net [127.0.0.1]) (mroute_mailscanner, port 10026) with LMTP id R8VZjAi4f7Cf; Mon, 26 Feb 2018 20:21:04 +0000 (UTC) Received: from red.stonehenge.com (red.stonehenge.com [208.79.95.2]) by 001.las.mailroute.net (Postfix) with ESMTP id 3zqtWN3q27z8sXt; Mon, 26 Feb 2018 20:21:04 +0000 (UTC) Received: by red.stonehenge.com (Postfix, from userid 1001) id 1AC5B1D53; Mon, 26 Feb 2018 12:21:03 -0800 (PST) From: merlyn@stonehenge.com (Randal L. Schwartz) To: John Reynolds Cc: freebsd-questions@freebsd.org Subject: Re: Anybody got a T-mobile cellspot v2 to work with NAT'd firewall (IPFW)? References: x-mayan-date: Long count = 13.0.5.4.13; tzolkin = 12 Ben; haab = 11 Kayab Date: Mon, 26 Feb 2018 12:21:03 -0800 In-Reply-To: (John Reynolds's message of "Sat, 17 Feb 2018 22:00:19 -0700") Message-ID: <868tbfbiz4.fsf@red.stonehenge.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Feb 2018 20:21:15 -0000 >>>>> "John" == John Reynolds writes: John> I can see that it is getting an IP address from my DHCP server and John> through tcpdump I see that it is talking to tmobile's servers--but John> it just abruptly "stops" and I get no further traffic to/from the John> device once I get to this point: Often these errors are caused by MTUs that are too large. Some net providers don't permit the ICMPs that enable MTU discovery, so I've routinely added things like setting the MTU to 1300 just to make it all work. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 Perl/Unix/Dart consulting, Technical writing, Comedy, etc. etc. Still trying to think of something clever for the fourth line of this .sig