From: Brian Haley <brian.haley-VXdhtT5mjnY@public.gmane.org>
To: Dan Smith <danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org
Subject: Re: [PATCH 1/2] C/R: Support for IPv6 addresses on network devices
Date: Tue, 30 Mar 2010 15:56:45 -0400 [thread overview]
Message-ID: <4BB2577D.5060005@hp.com> (raw)
In-Reply-To: <87r5n1el9z.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
Dan Smith wrote:
> BH> Well, in most cases you could ignore the global addresses as well,
> BH> since if they were auto-configured they'll be generated again on
> BH> the next Router Advertisement. That's why they're removed on an
> BH> ifdown, but the permanent ones aren't (any more).
>
> So, I just checked... All of my link-local addresses have the
> IFA_F_PERMANENT flag (0x80) set as well. What am I missing?
Sorry, I was recalling this from memory without looking at the code.
link-locals are always marked "permanent"
global addresses added by hand are marked "permanent"
global addresses added by auto-configuration are marked "dynamic"
(/sbin/ip prints this if IFA_F_PERMANENT is not set)
That way you can tell if they were added by the kernel or the user.
-Brian
next prev parent reply other threads:[~2010-03-30 19:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-24 19:40 C/R: Fixup IPv6 support Dan Smith
[not found] ` <1269459625-21033-1-git-send-email-danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-03-24 19:40 ` [PATCH 1/2] C/R: Support for IPv6 addresses on network devices Dan Smith
[not found] ` <1269459625-21033-2-git-send-email-danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-03-25 20:36 ` Brian Haley
[not found] ` <4BABC967.5090908-VXdhtT5mjnY@public.gmane.org>
2010-03-25 21:01 ` Dan Smith
[not found] ` <87aatwf74u.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2010-03-25 21:28 ` Brian Haley
[not found] ` <4BABD594.1020301-VXdhtT5mjnY@public.gmane.org>
2010-03-26 15:35 ` Dan Smith
[not found] ` <87634jf63u.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2010-03-30 15:35 ` Brian Haley
[not found] ` <4BB21A45.4050300-VXdhtT5mjnY@public.gmane.org>
2010-03-30 16:17 ` Dan Smith
[not found] ` <87zl1peqd4.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2010-03-30 17:05 ` Brian Haley
[not found] ` <4BB22F73.60704-VXdhtT5mjnY@public.gmane.org>
2010-03-30 18:07 ` Dan Smith
[not found] ` <87r5n1el9z.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2010-03-30 19:56 ` Brian Haley [this message]
2010-03-24 19:40 ` [PATCH 2/2] C/R: Fix storing IPv6 addresses and handle the "ipv6only" socket flag Dan Smith
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