From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christof Koehler Subject: Re: autofs reverts to IPv4 for multi-homed IPv6 server ? Date: Thu, 28 Apr 2016 14:40:12 +0200 Message-ID: <20160428124012.GW30271@bccms.uni-bremen.de> References: <20160425150638.GC30271@bccms.uni-bremen.de> <1461632818.3218.29.camel@themaw.net> <1461664433.3218.42.camel@themaw.net> <20160426152711.GF30271@bccms.uni-bremen.de> <1461722078.4208.31.camel@themaw.net> <20160427165250.GM30271@bccms.uni-bremen.de> <1461812190.3083.101.camel@themaw.net> <20160428091019.GO30271@bccms.uni-bremen.de> <1461840658.3063.18.camel@themaw.net> <20160428112648.GS30271@bccms.uni-bremen.de> Reply-To: christof.koehler@bccms.uni-bremen.de Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=bccms.uni-bremen.de; s=dkim; t=1461847213; bh=nAfZCaiv5MubnIB/7pBj6xyLSNVqwDV6b1LZ3uINhPc=; h=Date:From:To:Cc:Reply-To:References:In-Reply-To; b=yAI6AVrOSQ7kBLQbMOe0eTqmcLElyAawapBlSZdwYr//lsLMtDFUiDFc76U/hfQoP z6AtkTPOI9WtbkeEAwtuFXR57yw0oDopwr40e1fj4lbHHAJ1pqGGAZ2xrEVFChjb6X /NyDZkNvN1BN4l/Gqu2TFLVNIfraPKb/7jiLL9fc= Content-Disposition: inline In-Reply-To: <20160428112648.GS30271@bccms.uni-bremen.de> Sender: autofs-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="utf-8" To: Ian Kent Cc: autofs@vger.kernel.org Hello, I should add http://biplane.com.au/blog/?p=3D122 for the easy read on=20 destination address selection (/etc/gai.conf). Quite a machinery if the application chooses to use it. Best Regards Christof On Thu, Apr 28, 2016 at 01:26:48PM +0200, Christof Koehler wrote: > Hello, >=20 > On Thu, Apr 28, 2016 at 06:50:58PM +0800, Ian Kent wrote: > > On Thu, 2016-04-28 at 11:10 +0200, Christof Koehler wrote: > >=20 > > Sounds like I'll need to actually have a look at that RFC before do= ing > > anything, ;) > These might be nicer reads: > http://biplane.com.au/blog/?p=3D22 > http://biplane.com.au/blog/?p=3D30 >=20 > Please note that the actual "ip addrlabel" output on a pristine 16.04 > is=20 > prefix ::1/128 label 0=20 > prefix ::/96 label 3=20 > prefix ::ffff:0.0.0.0/96 label 4=20 > prefix 2001::/32 label 6=20 > prefix 2001:10::/28 label 7=20 > prefix 3ffe::/16 label 12=20 > prefix 2002::/16 label 2=20 > prefix fec0::/10 label 11=20 > prefix fc00::/7 label 5=20 > prefix ::/0 label 1 > so that catches ULAs in the fc00::/7 already with a label separating > them. I additional add > prefix 2001:638:708:1261:2000::/96 label 99=20 > prefix 2001:638:708:1261:1000::/96 label 99 > but that should not matter. >=20 > > > However, ping times (response times) on ethernet effectively show > > > random variations, sometimes in the millisecond range. > >=20 > > True but the worst case is you end up with a trivial load balancing > > effect. >=20 > If addresses are equivalent that is a desirable effect. My goal howev= er > was to distinguish between GUA and ULA relying on the RFC for selecti= on > to avoid headaches. I will have to rethink this for sure. >=20 > > Say, for example, you had multiple distinct interfaces on a machine= to > > increase available throughput (believe it or not I've seen it done)= then > > this sort of load balancing could be beneficial. >=20 > Yes, been there, done that; but I would consider that something no lo= nger needed=20 > in this enlightened age: > https://help.ubuntu.com/community/UbuntuBonding#Descriptions_of_bondi= ng_modes > Especially Mode 4. But I think you know them :-) >=20 >=20 > >=20 > > Mmm .. you should be able to put addresses in the map. > I will try again to make sure. >=20 > >=20 > > The ppa is done, to the extent that I wanted too, so check it out. > > Have a look at https://launchpad.net/~raven-au. > >=20 > Thank you, I will try and report back. >=20 >=20 > Best Regards >=20 > Christof >=20 > --=20 > Dr. rer. nat. Christof K=C3=B6hler email: c.koehler@bccms.uni-b= remen.de > Universitaet Bremen/ BCCMS phone: +49-(0)421-218-62334 > Am Fallturm 1/ TAB/ Raum 3.12 fax: +49-(0)421-218-62770 > 28359 Bremen =20 >=20 > PGP: http://www.bccms.uni-bremen.de/cms/people/c_koehler/ > -- > To unsubscribe from this list: send the line "unsubscribe autofs" in --=20 Dr. rer. nat. Christof K=C3=B6hler email: c.koehler@bccms.uni-bre= men.de Universitaet Bremen/ BCCMS phone: +49-(0)421-218-62334 Am Fallturm 1/ TAB/ Raum 3.12 fax: +49-(0)421-218-62770 28359 Bremen =20 PGP: http://www.bccms.uni-bremen.de/cms/people/c_koehler/ -- To unsubscribe from this list: send the line "unsubscribe autofs" in