From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-x233.google.com (mail-pd0-x233.google.com [IPv6:2607:f8b0:400e:c02::233]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id B18A121F2D8 for ; Sat, 5 Apr 2014 05:49:16 -0700 (PDT) Received: by mail-pd0-f179.google.com with SMTP id w10so4530303pde.10 for ; Sat, 05 Apr 2014 05:49:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:disposition-notification-to:date:from:user-agent :mime-version:to:cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=aHgxv2vkEqqbZiRQgPgiARRvmqqrIu3DkDIC1mwCu1U=; b=WeUXVdnjjcWUWaHXTlP7QaPc9wVp1p/UAZXdaCBVL3gTejMA03If5D3PYnw8eq2K3P uJ/YyYtQkAb7ybebcJgKDVg9aynRAf82Q+UgVYFlt28F2Jw5MnL0K9JeqY+NeFJgcVHh Vli9nE04IYvSgDWN1TpQ9tL4G6/hKRsd20UAbddCnr74nkaZfGnD5G4sAvJ7F9OEZlqR RMGz8IPkL99vvxCB6ayex893sFtTUrwKMibWssjb+UYGxKMi35HkK0jh1gnPJC7HnQHv qfwc/43I6ar2Alj2fEWgSef/zB5jIVPO2sTG3qacFViRyou1PE/6miaZoV5Ot7PuC7N7 qMDA== X-Received: by 10.68.76.68 with SMTP id i4mr20583426pbw.73.1396702156008; Sat, 05 Apr 2014 05:49:16 -0700 (PDT) Received: from [172.30.42.80] (220-244-175-87.static.tpgi.com.au. [220.244.175.87]) by mx.google.com with ESMTPSA id j3sm24243094pbh.38.2014.04.05.05.49.13 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 05 Apr 2014 05:49:14 -0700 (PDT) Message-ID: <533FFBC7.2030201@gmail.com> Date: Sat, 05 Apr 2014 23:49:11 +1100 From: Neil Shepperd User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Dave Taht References: <533DA665.2050305@gmail.com> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] cerowrt-3.10.34-4 dev build released X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Apr 2014 12:49:16 -0000 > Sounds like you are going to stick with -4 for a bit? Actually, this is the first time I've tried cerowrt on a router. But yeah, I'll stick with the current version unless you come out with a new patch to try. > what I've been doing is mounting a usb stick, and just running continuously > on the stick > > tcpdump -s 128 -i ge00 -w ge00.cap & > tcpdump -s 128 -i sw00 -w sw00.cap & > > This definately hurts performance... > > And it's probably time to do a tcpdump on the connected device as well. > Update: I did this, and experienced the hang again. A first look at the tcpdump output on sw00 shows a sudden reduction in traffic at 20:40:54, so I assume that's probably the time of the event. After that, I see many DHCP and ARP requests arriving, but no responses leaving the interface. In fact, I don't see anything leaving except, oddly, some DNS responses (which are indeed received by my laptop). I also see some EAPOL stuff on both the router and laptop at roughly the same time, so I guess that's getting through, but I don't know the direction. I think next time I'll try with -Pin/-Pout to separate incoming and outgoing packets properly... > Hmm. OK, this brings back the device driver into the equation... I > WAS seeing dhcp and arp requests "getting through" from the captures, > and it seemed like arp in particular was getting through... So I guess this is only half right? What I see in syslog is dnsmasq saying it has sent a packet, but it doesn't make it onto the interface. Apart from DNS packets, so I don't know what to make of that. Neil