Date: Thu, 28 Jun 2007 19:19:25 +0200 From: Max Laier <max@love2party.net> To: freebsd-pf@freebsd.org Cc: Hugo Koji Kobayashi <koji@registro.br> Subject: Re: udp fragmentation Message-ID: <200706281919.41777.max@love2party.net> In-Reply-To: <200706042200.14860.max@love2party.net> References: <20070528224225.GC40678@registro.br> <20070604194430.GD21681@registro.br> <200706042200.14860.max@love2party.net>
next in thread | previous in thread | raw e-mail | index | archive | help
--nextPart26291597.Bi16EKtsA2 Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Monday 04 June 2007, Max Laier wrote: > Hi again, > > On Monday 04 June 2007, Hugo Koji Kobayashi wrote: > > pf is running on the DNS client machine. The DNS server is on a > > completely different network (I don't control this server). The > > client can send the udp request with no problem (it's a small udp > > datagram; less than 512 bytes), the server sends the udp response > > fragmented, but the client can't receive it. > > > > Please, find attached a new test with the requested information. > > > > udp: > > 36 datagrams received > > 2 with bad checksum > > 34 delivered > > 40 datagrams output > > <test> > > > udp: > > 36 datagrams received > > 3 with bad checksum > > 33 delivered > > 41 datagrams output > > Aha! Can you confirm that "bad checksum" increases for every > fragmented packet and I'll look for a cure. I can't reproduce this. What hardware are you running on? (arch, nic=20 (rx/txcsum), non-standart CFLAGS). Just to confirm I'm testing the right=20 cases, my setup looks like: Host1 Host2 Host3 netsend -> pf scrub -> pf scrub -> netreceive Everthing works as expected with various UDP payloads > MTU. =2D-=20 /"\ Best regards, | mlaier@freebsd.org \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | mlaier@EFnet / \ ASCII Ribbon Campaign | Against HTML Mail and News --nextPart26291597.Bi16EKtsA2 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.3 (FreeBSD) iD8DBQBGg+2tXyyEoT62BG0RAonoAJ9CsdYETd3u+u6cyHNidkYl21wCVQCeOATp PbMQx7H+zPX0Dh3+umz8l1I= =PIvy -----END PGP SIGNATURE----- --nextPart26291597.Bi16EKtsA2--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200706281919.41777.max>