OS-438, IPv6 support for Infoblox

* In https://jira.inca.infoblox.com:8443/browse/OPENSTACK-438 you may grab shell script to test functionality.
* Currently we support only DUID-LL stateful IPv6 (https://tools.ietf.org/html/rfc3315#section-9.4), so to get IPv6 in stateful mode run dhclient -6 -D LL eth0

Email:
John Belamaric
Nov 14 

See http://blog.geoff.co.uk/2011/07/08/dhcpv6-surprises/ for info on how to generate a DUID-LL from the MAC. Without more extensive Neutron changes, we likely can't support anything other then LL DUIDs.

Fortunately for those wishing to use old-style MAC addresses, there’s an alternative DUID type that let you do this. The DUID described above is a “Type 1” DUID, and is referred to as a “Link-Layer plus Time DUID”, or DUID-LLT. Many older DHCPv6 clients implement only Type 1 DUIDs. You can configure ISC DHCPv6 client to use link-layer DUIDs (DUID-LLs), which is simply the MAC address prepended with two identifiers (the sequence “00:03:00:01”). Moreover, these can be configured on a per-interface basis in the ISC DHCP client.3 Problem solved