On Fri, 21 Jan 2011, Hajimu UMEMOTO wrote:
Hi,
On Wed, 19 Jan 2011 03:44:31 +0100
Bernd Walter <ti...@cicely7.cicely.de> said:
ticso> This is one of the blocks for this interface:
ticso> re0 1500 2a02:21e0:16e 2a02:21e0:16e0:20 0 - -
1 - -
ticso> ff02:1::2 (refs: 1)
ticso> ff02:1::d (refs: 1)
ticso> ff02:1::202 (refs: 1)
ticso> ff02:1::1:ff00:103 (refs: 1)
ticso> ff01:1::1 (refs: 1)
ticso> ff02:1::2:6214:d648(refs: 1)
ticso> ff02:1::1 (refs: 1)
ticso> ff02:1::1:ff00:7992(refs: 1)
ticso> 2a02:21e0:16e seems to be the truncated IP.
ticso> The first line has 2a02:21e0:16e0:20 - I assume this should say
2a02:21e0:16e0:2000::103,
ticso> but it is truncated as well...
Yes, an IPv6 address is too long for the traditional netstat output
format. :)
ticso> Adding -W won't help on truncation.
It seems -W is not handled, here.
ticso> - ff02:1::2
ticso> is not just truncated - this obviously should be ff02::2.
ticso> This '1' is part of every multicst address listed, although they
ticso> don't belong there.
ticso> By looking at systems with a large number of interfaces I came to the
ticso> conclusion that this is the scope ID, but why is it listed as part
ticso> of the IP?
Yes, it is the internal scope address representation of the KAME IPv6
stack. It is hided in the output of 'netstat -rn'. But, it seems not
for `netstat -ani'. There is no reason to not hide it for `netstat
-ani', IMHO. So, I've just committed to hide it:
http://svn.freebsd.org/viewvc/base?view=revision&revision=217642
Thanks; there's also a PR somewhere about it from today or yesterday.
The real problem of course is that those things are still queried by
kvm(3) rather than by a real interface in which case I think the
kernel shouldn't export the addresses with the scope embedded. We
should make sure that with libnetstat or whatever, this will not come
back.
/bz
--
Bjoern A. Zeeb You have to have visions!
<ks> Going to jail sucks -- <bz> All my daemons like it!
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails.html
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