From owner-freebsd-net@freebsd.org Wed Aug 17 14:34:27 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 76907BBD0B5 for ; Wed, 17 Aug 2016 14:34:27 +0000 (UTC) (envelope-from mail@m.jwh.me.uk) Received: from mail.zorins.co.uk (mail.zorins.co.uk [91.121.236.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 466461642; Wed, 17 Aug 2016 14:34:26 +0000 (UTC) (envelope-from mail@m.jwh.me.uk) Received: from jwhlaptop (unknown [185.100.249.0]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) (Authenticated sender: mail@m.jwh.me.uk) by mail.zorins.co.uk (Postfix) with ESMTPSA id 3sDsDf1DsbzFV4M; Wed, 17 Aug 2016 14:34:10 +0000 (UTC) From: "Joe Holden" To: "'Kristof Provost'" , Cc: References: <028b01d1f871$7b9af200$72d0d600$@m.jwh.me.uk> In-Reply-To: Subject: RE: PF weirdness Date: Wed, 17 Aug 2016 15:34:24 +0100 Message-ID: <02aa01d1f894$738613b0$5a923b10$@m.jwh.me.uk> X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQKXRRgk5sHypBEegVP4fmMyapXM/AI5SD0EnrDUWtA= Content-Language: en-gb X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Aug 2016 14:34:27 -0000 Aha, perfect ok then I'll leave you to it! Thanks > -----Original Message----- > From: Kristof Provost [mailto:kp@FreeBSD.org] > Sent: 17 August 2016 12:18 > To: mail+lists@m.jwh.me.uk > Cc: freebsd-net@freebsd.org > Subject: Re: PF weirdness > > On 17 Aug 2016, at 11:24, mail+lists@m.jwh.me.uk wrote: > > Ok so, I have an ERL that just does PPPoE and NAT via PF, however it > > seems > > to be modifying the packets passing through the nat filter such that > > traceroutes end up like this: > > > > C:\Users\jwh>tracert -d -w 1 8.8.8.8 > > > > Tracing route to 8.8.8.8 over a maximum of 30 hops > > > > 1 5 ms 1 ms 1 ms 172.21.88.254 > > 2 47 ms 40 ms 39 ms 8.8.8.8 > > 3 40 ms * 39 ms 8.8.8.8 > > 4 37 ms 25 ms 67 ms 8.8.8.8 > > That's PR 201519. > I'm looking into it, but right now I have no idea why it happens. > It seems to be fine on head (and likely also on 11), and I don't see > any obvious differences in pf that could cause this. > > Regards, > Kristof