From owner-freebsd-net@FreeBSD.ORG Mon Apr 4 10:09:06 2011 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 6FA02106564A for ; Mon, 4 Apr 2011 10:09:06 +0000 (UTC) (envelope-from kmacybsd@gmail.com) Received: from mail-pz0-f54.google.com (mail-pz0-f54.google.com [209.85.210.54]) by mx1.freebsd.org (Postfix) with ESMTP id 3D1AE8FC20 for ; Mon, 4 Apr 2011 10:09:05 +0000 (UTC) Received: by pzk27 with SMTP id 27so1700346pzk.13 for ; Mon, 04 Apr 2011 03:09:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=i2605IoZ3XWdnnpyROXnR9dJT6eCKHiaW0h/SYq2w5M=; b=QdZQ1xaZikgxes//Wb8RIJxP8vwDu/nj1/kRfOl0VpzDSwQ8+INB5OHlDKayniRl8c OwxyXmhZLfozZ4QTucOthiZg1TsJXbLcIm+zrNWiYjdBuXMXgSee1qzvC+EFdVBqP3XY sIw93bWPJa9amRCLRnIkO2l+A7gzCZ67gdlmU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=nTwZ4bzQEQNQckDaJQ7cbPZKxhGAshlS/Lw1O51kJ3cH0ZscMkS/Mpy3WENMfUGo7Q K3iHdrAScXbHlWVhXjaH4V/lfAVymeNNvCtdQL+Gp9aKsHRpyswokvO92J9eOLnLbPmg zzll7Wp/zhYWD3wtbYFz1fuUgBkdpUMxkJR48= MIME-Version: 1.0 Received: by 10.142.62.38 with SMTP id k38mr3733453wfa.85.1301911745664; Mon, 04 Apr 2011 03:09:05 -0700 (PDT) Sender: kmacybsd@gmail.com Received: by 10.68.66.10 with HTTP; Mon, 4 Apr 2011 03:09:05 -0700 (PDT) In-Reply-To: <20110404095333.GA3421@deta.isafeelin.org> References: <20110401141655.GA5350@deta.isafeelin.org> <4D95E62A.5000109@comcast.net> <4D987B1B.4000608@isafeelin.org> <20110404095333.GA3421@deta.isafeelin.org> Date: Mon, 4 Apr 2011 12:09:05 +0200 X-Google-Sender-Auth: Oj7h_2T1p-oY0xG5JsbkfdqSQOc Message-ID: From: "K. Macy" To: Frederique Rijsdijk Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: "freebsd-net@freebsd.org" Subject: Re: Network stack unstable after arp flapping 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: Mon, 04 Apr 2011 10:09:06 -0000 Correct. Set it to zero and the flowtable will be bypassed. flowtable.c: static uint32_t ipv6_flow_lookup_hash_internal( struct sockaddr_in6 *ssin6, struct sockaddr_in6 *dsin6, uint32_t *key, uint16_t flags) { uint16_t sport, dport; uint8_t proto; int offset =3D 0; if ((V_flowtable_enable =3D=3D 0) || (V_flowtable_ready =3D=3D 0)) return (0); Ciao On Mon, Apr 4, 2011 at 11:53 AM, Frederique Rijsdijk wrote: > Kip, > > Which sysctl are we talking about exactly? Just to be sure.. > > net.inet.flowtable.enable ? > > > -- Frederique > > > > On Sun, Apr 03, 2011 at 08:11:33PM +0200, K. Macy wrote: >> I don't think it was properly tested when it was enabled for IPv6. >> Given that I have been absentee it really should not be in the default >> kernel or at least the sysctl should be off. Sorry for the >> inconvenience. Additionally, you don't need to rebuild you can just >> disable the sysctl. >> >> >> =A0-Kip >> On Sunday, April 3, 2011, Frederique Rijsdijk = wrote: >> > Steve, >> > >> > On 01-04-11 16:50, Steve Polyack wrote: >> >> On 04/01/11 10:16, Frederique Rijsdijk wrote: >> > [ .. ] >> >>> Mar 31 18:36:12 srv01 kernel: arp: x.x.x.1 moved from >> >>> 00:00:0c:9f:f0:3d to 00:00:0c:07:ac:3d on bge0 >> > [ .. ] >> >>> The result of that, is that loads of FreeBSD machines (6.x, 7.x and >> >>> 8.x) developed serious network issues, mainly being no or slow traff= ic >> > [ .. ] >> >>> Any ideas anyone? >> >> We experienced a similar issue here, but IIRC only on our 8.x systems >> >> (we don't have any 7.x). =A0Disabling flowtable cleared everything up >> >> immediately. =A0You can try that and see if it helps. >> > >> > AFAIK this feature was introduced in 8.x? Btw you are here referring t= o >> > UDP, we had issues with TCP. It could still be related, perhaps I'll g= et >> > around emulating the situation and see if I can reproduce it. >> > >> > >> > -- Frederique >> > >> > >> > _______________________________________________ >> > freebsd-net@freebsd.org=A0mailing list >> > http://lists.freebsd.org/mailman/listinfo/freebsd-net >> > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> > >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >