* ip -6 addr flush dev <device> flushes also the autogenerated link-local address
@ 2005-03-02 21:59 Peter Bieringer
2005-03-02 22:09 ` jamal
0 siblings, 1 reply; 6+ messages in thread
From: Peter Bieringer @ 2005-03-02 21:59 UTC (permalink / raw)
To: Maillist USAGI-users; +Cc: Maillist netdev
Hi,
sure one know that using
ip -6 addr flush dev <device>
flushes (removes) all IPv6 addresses on a device.
Unfortunately, it also removes the autogenerated link-local address.
It reappears only if interface was cycled down and up, not so nice.
What about an feature that the automagically generated link-local address
will not be removed on "flush"?
Peter
--
Dr. Peter Bieringer http://www.bieringer.de/pb/
GPG/PGP Key 0x958F422D mailto: pb at bieringer dot de
Deep Space 6 Co-Founder and Core Member http://www.deepspace6.net/
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: ip -6 addr flush dev <device> flushes also the autogenerated link-local address
2005-03-02 21:59 ip -6 addr flush dev <device> flushes also the autogenerated link-local address Peter Bieringer
@ 2005-03-02 22:09 ` jamal
2005-03-02 23:14 ` Thomas Graf
0 siblings, 1 reply; 6+ messages in thread
From: jamal @ 2005-03-02 22:09 UTC (permalink / raw)
To: Peter Bieringer; +Cc: Maillist USAGI-users, Maillist netdev, Thomas Graf
Is this a user space problem? I think we had something along these lines
fixed recently. Thomas?
cheers,
jamal
On Wed, 2005-03-02 at 16:59, Peter Bieringer wrote:
> Hi,
>
> sure one know that using
>
> ip -6 addr flush dev <device>
>
> flushes (removes) all IPv6 addresses on a device.
>
> Unfortunately, it also removes the autogenerated link-local address.
>
> It reappears only if interface was cycled down and up, not so nice.
>
>
> What about an feature that the automagically generated link-local address
> will not be removed on "flush"?
>
> Peter
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ip -6 addr flush dev <device> flushes also the autogenerated link-local address
2005-03-02 22:09 ` jamal
@ 2005-03-02 23:14 ` Thomas Graf
2005-03-03 0:00 ` YOSHIFUJI Hideaki / 吉藤英明
0 siblings, 1 reply; 6+ messages in thread
From: Thomas Graf @ 2005-03-02 23:14 UTC (permalink / raw)
To: jamal; +Cc: Peter Bieringer, Maillist USAGI-users, Maillist netdev
* jamal <1109801372.1098.228.camel@jzny.localdomain> 2005-03-02 17:09
>
> Is this a user space problem? I think we had something along these lines
> fixed recently. Thomas?
I didn't fix any of these but it's definitely a userspace problem.
One can easly work around this by iterating over all scopes
except for link local and provide the scope to flush. We'll have
to put additional filters into print_addrinfo() if we want this
to be default but I'm not even sure what the official policy should
be like. Any standards on this?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ip -6 addr flush dev <device> flushes also the autogenerated link-local address
2005-03-02 23:14 ` Thomas Graf
@ 2005-03-03 0:00 ` YOSHIFUJI Hideaki / 吉藤英明
2005-03-03 7:25 ` Peter Bieringer
0 siblings, 1 reply; 6+ messages in thread
From: YOSHIFUJI Hideaki / 吉藤英明 @ 2005-03-03 0:00 UTC (permalink / raw)
To: tgraf; +Cc: hadi, pb, usagi-users, netdev, yoshfuji
In article <20050302231400.GU31837@postel.suug.ch> (at Thu, 3 Mar 2005 00:14:00 +0100), Thomas Graf <tgraf@suug.ch> says:
> * jamal <1109801372.1098.228.camel@jzny.localdomain> 2005-03-02 17:09
> >
> > Is this a user space problem? I think we had something along these lines
> > fixed recently. Thomas?
>
> I didn't fix any of these but it's definitely a userspace problem.
> One can easly work around this by iterating over all scopes
> except for link local and provide the scope to flush. We'll have
> to put additional filters into print_addrinfo() if we want this
> to be default but I'm not even sure what the official policy should
> be like. Any standards on this?
I believe that flush should remove all addresses including link-local.
So, current behavior is correct.
--yoshfuji
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ip -6 addr flush dev <device> flushes also the autogenerated link-local address
2005-03-03 0:00 ` YOSHIFUJI Hideaki / 吉藤英明
@ 2005-03-03 7:25 ` Peter Bieringer
2005-03-03 12:53 ` Thomas Graf
0 siblings, 1 reply; 6+ messages in thread
From: Peter Bieringer @ 2005-03-03 7:25 UTC (permalink / raw)
To: usagi-users, netdev
--On Thursday, March 03, 2005 09:00:09 AM +0900 "YOSHIFUJI Hideaki /
=?iso-2022-jp?B?GyRCNUhGIzFRTEAbKEI=?=" <yoshfuji@linux-ipv6.org> wrote:
> In article <20050302231400.GU31837@postel.suug.ch> (at Thu, 3 Mar 2005
> 00:14:00 +0100), Thomas Graf <tgraf@suug.ch> says:
>
>> * jamal <1109801372.1098.228.camel@jzny.localdomain> 2005-03-02 17:09
>> >
>> > Is this a user space problem? I think we had something along these
>> > lines fixed recently. Thomas?
>>
>> I didn't fix any of these but it's definitely a userspace problem.
>> One can easly work around this by iterating over all scopes
>> except for link local and provide the scope to flush. We'll have
>> to put additional filters into print_addrinfo() if we want this
>> to be default but I'm not even sure what the official policy should
>> be like. Any standards on this?
>
> I believe that flush should remove all addresses including link-local.
> So, current behavior is correct.
My pitfall was that I didn't know (but Pekka told me) that "ip -6 flush"
also understand scopes.
So I use the suggestion given by Thomas to run through all scopes of the
addresses and flush dedicated like
ip -6 addr flush dev <device> scope global
ip -6 addr flush dev <device> scope site
BTW: how many scopes are currently defined?
ip help shows me:
SCOPE-ID := [ host | link | global | NUMBER ]
What means NUMBER and why is "site" understood but not in online help?
Peter
--
Dr. Peter Bieringer http://www.bieringer.de/pb/
GPG/PGP Key 0x958F422D mailto: pb at bieringer dot de
Deep Space 6 Co-Founder and Core Member http://www.deepspace6.net/
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: ip -6 addr flush dev <device> flushes also the autogenerated link-local address
2005-03-03 7:25 ` Peter Bieringer
@ 2005-03-03 12:53 ` Thomas Graf
0 siblings, 0 replies; 6+ messages in thread
From: Thomas Graf @ 2005-03-03 12:53 UTC (permalink / raw)
To: Peter Bieringer; +Cc: usagi-users, netdev
> BTW: how many scopes are currently defined?
>
> ip help shows me:
> SCOPE-ID := [ host | link | global | NUMBER ]
>
> What means NUMBER and why is "site" understood but not in online help?
The kernel hardcodes the following scopes internally:
0 {global | universe}
200 site
253 link
254 host
255 nowhere
Additional names may be assigned to numbers in /etc/iproute2/rt_scopes
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2005-03-03 12:53 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2005-03-02 21:59 ip -6 addr flush dev <device> flushes also the autogenerated link-local address Peter Bieringer
2005-03-02 22:09 ` jamal
2005-03-02 23:14 ` Thomas Graf
2005-03-03 0:00 ` YOSHIFUJI Hideaki / 吉藤英明
2005-03-03 7:25 ` Peter Bieringer
2005-03-03 12:53 ` Thomas Graf
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