[openstack-dev] [neutron] IPv4 transition/interoperation with IPv6

Andrew Ruthven andrew at etc.gen.nz
Fri May 8 22:31:31 UTC 2015


On Wed, 2015-05-06 at 02:46 -0400, Mike Spreitzer wrote:
> While I am a Neutron operator, I am also a customer of a lower layer
> network provider.  That network provider will happily give me a
> few /64.  How do I serve IPv6 subnets to lots of my tenants?  In the
> bad old v4 days this would be easy: a tenant puts all his stuff on his
> private networks and NATs (e.g., floating IP) his edge servers onto a
> public network --- no need to align tenant private subnets with public
> subnets.  But with no NAT for v6, there is no public/private
> distinction --- I can only give out the public v6 subnets that I am
> given.  Yes, NAT is bad.  But not being able to get your job done is
> worse. 

I would suggest that you talk to your network provider, or apply to your
local RIR to obtain Provider Independent address space. It should be
relatively trivial to obtain a significant amount of IPv6 address space.
Trying to make this work with only a few /64s is going to lead to a
world of pain.

Cheers,
Andrew 

-- 
Andrew Ruthven, Wellington, New Zealand
andrew at etc.gen.nz             |     linux.conf.au 2015 
  New Zealand's only Cloud:   |  BeAwesome in Auckland, NZ
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