Final patch found, merged into openwrt (tested on 2.6.38, 2.6.37), and incorporated into the bismark and iscwrt builds. Nice catch. I hope the next round of sfb testing goes much better. On Fri, May 6, 2011 at 1:42 PM, Dave Taht wrote: > > > On Fri, May 6, 2011 at 12:18 PM, 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... >> >> > My concern here is that a AQM-aware (ECN) qdisc such as SFB on the external > interface will not recognize a flow for what it is, when encapsulated... > > > -- Dave Täht SKYPE: davetaht US Tel: 1-239-829-5608 http://the-edge.blogspot.com