On 2011-5-6, at 21:18, Jonathan Morton wrote:
> On 6 May, 2011, at 9:14 pm, Dave Taht wrote:
> 
>> I am curious as to what the correct behavior here should be for encapsulated 
>> (6in4, 6to4, teredo) packets, and if this functionality was also borked. I 
>> was under the impression that for encapsulated packets the tos field was 
>> copied from the encapsulated packet to the ipv4 header.
> 
> Intuitively, these protocols are at the same level as IP in the stack, so 
> they should preserve ECN information as much as possible.  Copying the TOS 
> field should be sufficient...

Please see http://tools.ietf.org/html/rfc6040. No need to guess.

Lars

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