On 17 May 2014 14:13, Robert Mustacchi <[email protected]> wrote:
> On 5/16/14 19:07 , Lloyd Parkes via smartos-discuss wrote:
> > Hi all,
> > I spent several minutes looking for a doco on reporting bugs in the Wiki
> > but didn't come up with anything (and neither did Google), so here it is.
>
> We'll try and go through and add some language to the wiki, but you can
> file bugs at https://github.com/joyent/smartos-live
I had avoided Github because I once tried submitting a patch to you folks
and was told that I can't do that through github. Of course, bug reports
are not the same as patches.
> > Sometime since the builds of late 2013 the default IPv6 prefix length has
> > stopped being 64. In fact, it now appears to rather unreliable.
> >
> > The default IPv6 prefix length always seems to be 6 when I manually add
> an
> > address to an interface, but it seems to be 10 when a link-local address
> is
> > automatically assigned. In both cases, the prefix length should be 64.
> Note
> > that while link-local addresses are assigned from network block with a
> > prefix length of 10, link-local addresses are require to have 54 zero
> bits
> > after that prefix giving them the effective prefix length of 64.
>
> Can you describe how you're assigning those addresses and the VM
> configuration in question? Is this a SmartOS zone, a KVM instance,
> something else?
>
I'm old-school, so it's none of the above. I'm running ifconfig in the
global zone. On the old system I could run
ifconfig e1000g0 inet6 plumb up
ifconfig e1000g0 inet6 addif 2002:cb61:d534:3:21d:7dff:fe08:1111
Testing this is a bit tricky because the I only have one SmartOS server
which is my iSCSI target and I had an iSCSI configuration problem that
makes (made?) rebooting it a bad idea.
I've built a bunch of VMs including one from the old SmartOS USB drive I
was using on my SmartOS server and I've tested them all.
The SmartOS image from 20131212 also has a default prefix length of 6 and
so it has the bug too. I have no idea why my system used to work.
Solaris 11.1 has a default prefix length of 64 and so it works fine.
OS X and NetBSD also have a default prefix length of 64, but I don't really
expect anyone here to pay too much attention to those hippy BSD systems.
The prefix length of 10 on link-local address is almost certainly a red
herring and I'm not going to worry about it.
Cheers,
Lloyd
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