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From: Jonathan Morton <chromatix99@gmail.com>
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To: Dave Taht <dave.taht@gmail.com>
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Subject: Re: [Bloat] No ECN marking in IPv6 linux
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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...

 - Jonathan