From owner-freebsd-net@FreeBSD.ORG Thu Oct 8 06:06:10 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C22271065692 for ; Thu, 8 Oct 2009 06:06:10 +0000 (UTC) (envelope-from oleg@lath.rinet.ru) Received: from lath.rinet.ru (lath.rinet.ru [195.54.192.90]) by mx1.freebsd.org (Postfix) with ESMTP id 7CE868FC14 for ; Thu, 8 Oct 2009 06:06:10 +0000 (UTC) Received: by lath.rinet.ru (Postfix, from userid 222) id 05BE5704C; Thu, 8 Oct 2009 10:06:09 +0400 (MSD) Date: Thu, 8 Oct 2009 10:06:09 +0400 From: Oleg Bulyzhin To: rihad Message-ID: <20091008060608.GA23793@lath.rinet.ru> References: <4AC8A76B.3050502@mail.ru> <20091007085902.GA88982@lath.rinet.ru> <4ACC5E23.8090405@mail.ru> <20091007100503.GB88982@lath.rinet.ru> <4ACC6A7B.5050808@mail.ru> <20091007104525.GC88982@lath.rinet.ru> <4ACC7308.6070301@mail.ru> <4ACCC30E.7080504@elischer.org> <4ACCC4F3.3030302@mail.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4ACCC4F3.3030302@mail.ru> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-net@freebsd.org, Julian Elischer Subject: Re: dummynet dropping too many packets X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Oct 2009 06:06:10 -0000 On Wed, Oct 07, 2009 at 09:42:27PM +0500, rihad wrote: > Julian Elischer wrote: > > rihad wrote: > >> Oleg Bulyzhin wrote: > > > >> You probably have some special sources of documentation ;-) According > >> to man ipfw, both "netgraph/ngtee" and "pipe" decide the fate of the > >> packet unless one_pass=0. Or do you mean sprinkling smart skiptos here > >> and there? ;-) > >> > > > > ngtee should not have any affect on the packet.. it takes a copy.. > > > That's a logical conclusion, although I prefer trusting the man at hand > (pun intended) if I haven't tested it myself to see how it works: > > ngtee cookie > A copy of packet is diverted into netgraph, original packet is > either accepted or continues with the next rule, depending on > net.inet.ip.fw.one_pass sysctl variable. See ng_ipfw(4) > for more > information on netgraph and ngtee actions. > > > Although... I've a question to Mr. Oleg: > > > 2) use 'tee' rule with ng_ksocket & ng_netflow > > tee port > Send a copy of packets matching this rule to the divert(4) > socket > bound to port port. The search continues with the next rule. > > how is it different from one_pass=0? Both tee and ngtee w/ one_pass=0 > continue with the next rule. tee & ngtee are similar with one_pass=0 and different with one_pass=1 -- Oleg. ================================================================ === Oleg Bulyzhin -- OBUL-RIPN -- OBUL-RIPE -- oleg@rinet.ru === ================================================================