Discussion from the floor on PMTU reached a consensus that PMTU should remain in the draft. It was pointed out that at some error rate smaller packets are better than bigger packets. Satellite channels tend to have short bursts of errors then a period of clear transmission. If there is one loss per window, then packet size doesn't matter. A larger packet size opens the window faster than smaller packets.
Smaller packets are more efficient for store and forward systems.
A point that was well made was that the coding design should pick the appropriate MTU for the link and that Path MTU Discovery will find it. There are some open issues with PMTU that are not limited to satellites. Processing in the satellite system also affects the proper packet size. Mark Allman reiterated the goal of a last call on the Standard Mechanisms draft by the end of April. He will add a pointer to the PSC TCP implementation Web page and some words on security.