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.

I will make a note of this in the uberwrt/cerowrt/bismark efforts going on and backport the upcoming patch to openwrt.

On Fri, May 6, 2011 at 9:27 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
FYI

IPV6 ECN support is buggy on current linux kernels

Fix is on the way, problem spotted by Steinar H. Gunderson

https://bugzilla.kernel.org/show_bug.cgi?id=34322



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