IETF RFCs published on April 1st, 2011

This year's fine collection:

RFC 5984 -  Increasing Throughput in IP Networks with ESP-Based Forwarding: ESPBasedForwarding "This document proposes an experimental way of reaching infinite bandwidth in IP networks by the use of ESP-based forwarding. This document defines an Experimental Protocol for the Internet community."
RFC 6214 - Adaptation of RFC 1149 for IPv6 "This document specifies a method for transmission of IPv6 datagrams over the same medium as specified for IPv4 datagrams in RFC 1149. This document is not an Internet Standards Track specification; it is published for informational purposes."
RFC 6217 - Regional Broadcast Using an Atmospheric Link Layer "Broadcasting is a technology that has been largely discarded in favor of technologies like multicast.  This document builds on RFC 919 and describes a more efficient routing mechanism for broadcast packets destined for multiple Local Area Networks (LANs) or Metropolitan Area Networks (MANs) using an alternative link layer.  It significantly reduces congestion on network equipment and does not require additional physical infrastructure investment."

My favourite is 5984 ;)