Looking for comments

Owen DeLong owen at delong.com
Thu Jul 22 13:02:04 UTC 2010


On Jul 22, 2010, at 12:49 AM, William Herrin wrote:

> On Wed, Jul 21, 2010 at 5:37 PM, Owen DeLong <owen at delong.com> wrote:
>>>> http://tools.ietf.org/html/draft-arkko-ipv6-transition-guidelines
>>> There is a third major challenge to dual-stack that isn't addressed in
>>> the document: differing network security models that must deliver the
>>> same result for the same collection of hosts regardless of whether
>>> Ipv4 or v6 is selected. I can throw a COTS d-link box with
>>> address-overloaded NAT on a connection and have reasonably effective
>>> network security and anonymity in IPv4. Achieving comparable results
>>> in the IPv6 portion of the dual stack on each of those hosts is
>>> complicated at best.
>>> 
>> Actually, it isn't particularly hard at all... Turn on privacy addressing
>> on each of the hosts (if it isn't on by default) and then put a linux
>> firewall in front of them with a relatively simple ip6tables configuration
>> for outbound only.
> 
>> From the lack of dispute, can I infer agreement with the remainder of
> my comments wrt mitigations for the "one of my addresses doesn't work"
> problem and the impracticality of the document's section 4.3 and 4.4
> for wide scale Ipv6 deployment?
> 
No, merely resignation to the fact that you don't get it.

Owen





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