> In particular, why would we need a boundary at all? Setting it to > anything other than the PMTU would seem to defeat the purpose of > TFC for packets between the boundary and the PMTU. I don't agree, this highly depends on the traffic on the SA. For a general purpose tunnel with TCP flows, PMTU padding is fine. But if there are only small packets (maybe SIP+RTP), padding to the PMTU is very expensive. The administrator setting up the SAs probably knows (or even controls directly) what traffic it is used for, and might lower the boundary accordingly. Regards Martin -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
