Date: Sun, 28 Jun 2009 01:11:24 +0100
From: Rui Paulo <rpaulo@FreeBSD.org>
To: Hiroki Sato <hrs@FreeBSD.org>
Cc: jinmei@isc.org, bz@FreeBSD.org, rwatson@FreeBSD.org, ume@FreeBSD.org, net@FreeBSD.org
Subject: Re: RFC: convert net.inet6.ip6.{accept_rtadv, auto_linklocal} to per-interface flags
Message-ID: <A7B865AB-1829-4B03-8956-FEA39E0C0A45@FreeBSD.org>
In-Reply-To: <20090628.083534.177750036.hrs@allbsd.org>
References: <20090626.170006.244306978.hrs@allbsd.org> <A80E65C6-F7BE-47A9-91F7-42F2E4D33ABD@freebsd.org> <20090628.083534.177750036.hrs@allbsd.org>
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On 28 Jun 2009, at 00:35, Hiroki Sato wrote: > Rui Paulo <rpaulo@FreeBSD.org> wrote > in <A80E65C6-F7BE-47A9-91F7-42F2E4D33ABD@freebsd.org>: > > rp> On 26 Jun 2009, at 09:00, Hiroki Sato wrote: > rp> > So, I want to add the following changes: > rp> > > rp> > 1. Use per-interface ND6 flag "ifdisabled" as a flag for if it > is > rp> > IPv6-enabled or not. Set it by default. > rp> > rp> This looks okay, but "ifdisabled" seems to mean "disable the > rp> interface" instead of the actual meaning: "disable ipv6 neighbor > rp> discovery / disable ipv6 link local". Bikeshed apart, what about: > rp> # ifconfig fxp0 -nd6 (to disable ND6) > rp> # ifconfig fxp0 nd6 (to enable it) > > This is actually "ifconfig fxp0 *inet6* ifdisabled". The reason why > I used this name is ndp(8) uses "disabled" and the flag constant is > named as ND6_IFF_IFDISABLED. Oh, I didn't catch that. Makes more sense. > The "ifconfig fxp0 inet6 -nd6" is technically correct, but it sounds > rather cryptic from viewpoint that we use it as a flag to disable > IPv6. It means disabling NDP as well as marking all of the AF_INET6 > addresses on that interface as IN6_IFF_TENTATIVE. > > Hm, actually I do not stick to the name "ifdisabled". Is "nd6" > better? Well, since I now understand it includes inet6 as part of the command, I don't care whichever name gets selected. Pick the one you prefer :-) -- Rui Paulo
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