Dear Edward,

Qiong could send you the LW4o6 OpenWRT link.


Thank you,
Tina

> 在 2015年10月23日,上午5:50,Edward Lopez <[email protected]> 写道:
> 
> Thanks!  I’m interested in solutions that have implementations available, and 
> OpenWRT would do nicely
> 
>> On Oct 22, 2015, at 5:19 PM, Gottlieb, Jordan J 
>> <[email protected]> wrote:
>> 
>> Edward,
>> 
>> MAP-T (RFC7599) and MAP-E (RFC7577) also address the issues you describe.  
>> Both CE MAP variants can be enabled in OpenWRT and can be provisioned 
>> manually or through DHCPv6 (RFC7598).  Another excellent manual provisioned 
>> implementation is at http://enog.jp/~masakazu/vyatta/map/.  There are 
>> several commercial  CE and BR implementations in the pipeline for MAP-T.  
>> 
>> -Jordan
>> 
>> -----Original Message-----
>> From: Softwires [mailto:[email protected]] On Behalf Of Edward Lopez
>> Sent: Wednesday, October 21, 2015 6:29 AM
>> To: [email protected]
>> Subject: [Softwires] DS-Lite vs. 4rd
>> 
>> I apologize if this has been thrashed out in the past.  In looking as 
>> implementing DS-Lite support, it appears that the need to include an 
>> additional tuple of information on the IPv6 B4 address of the CPE is 
>> cumbersome to NAT performance and tunnel capacitance, as many HW accelerated 
>> NAT engines exist without this extra tuple.  It would appear that by 
>> splitting the AFTR into two functions, 4in6 encapsulation & NAT(CGN), we can 
>> overcome scaling and performance issues of DS-Lite.
>> 
>> However, the issue of overlapping endpoint subnets supported internally by 
>> the CPE leads to the issue potentially supporting NAT44 on the CPE, to 
>> support stateless encapsulation of returning IPv4 packets into IPv6 by the 
>> AFTR.  Section 4.2 of RFC-6333 states that CPE devices ‘should not’ perform 
>> NAT44, but that’s not the same as a ‘must not’
>> 
>> But as you craft this solution out, you begin to realize that you are 
>> re-creating the majority of 4rd, RFC-7600.  However, 4rd is currently an 
>> experimental standard.
>> 
>> My questions:
>> 
>> -    Has anyone implemented or considered implementing DS-Lite with CPEs 
>> performing NAT44?
>> -    Are their plans for this WG to move 4rd into standards track?
>> -    Are their any known implementations of 4rd out there for CPE devices 
>> (like OpenWRT)?
>> 
>> Thanks!
>> Ed Lopez
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