There's no problem with using it in an IPv6 environment if you use IPv6 prefix mechanisms as designed
If you've tied down your cloud environment too tight (and technically contra the spec - IPv6 is prefix based, not address based) then you have to expect to make alterations to the standard equipment. I have no problem with the temporary addresses as I scope my machines on /64 boundaries - which is what everything pretty much expects and RFC 5375 recommends. "Note that RFC 3177 strongly prescribes 64-bit subnets for general usage, and that stateless autoconfiguration on most link layers (including Ethernet) is only defined for 64-bit subnets." On 4 June 2014 11:57, Alex Bligh <ubu...@alex.org.uk> wrote: > Neil: the metadata is just one example (though that's not happening). > > The firewall rule thing applies irrespective of the metadata. The cloud > environment created requires only /128 addresses it knows about to be > accessible, and firewalls everything else out. Reasons for this include > prevention of spoofing of IP addresses on outbound traffic. We want each > UEC image to come up with the IPv6 address(es) we have assigned, and not > a random one in the same /64. This is not an unreasonable requirement. > We would use DHCPv6 for this if it weren't for the fact that DHCPv6 is > broken in different ways and has little support. > > IPv6 *as designed* says RFC4941 SHOULD (RFC capitalisation) be turned > off by default. So the argument that applications should be using it 'as > designed' is bogus, as if it was deployed *as designed* (i.e. per the > RFC) it would work. There would be no problem with (e.g.) Network > Manager turning this on in a desktop environment. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1068756 > > Title: > IPv6 Privacy Extensions enabled on Ubuntu Server by default > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1068756/+subscriptions -- Neil Wilson -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1068756 Title: IPv6 Privacy Extensions enabled on Ubuntu Server by default To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1068756/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
