%% You should probably cite draft-foo-v6ops-6rdmtu-03 instead of this revision. @techreport{foo-v6ops-6rdmtu-00, number = {draft-foo-v6ops-6rdmtu-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-foo-v6ops-6rdmtu/00/}, author = {Fred Templin}, title = {{6rd Tunnel MTU}}, pagetotal = 6, year = 2012, month = may, day = 18, abstract = {The 6rd tunnel MTU is currently recommended to be set to 1480. This is to avoid IPv4 fragmentation within the tunnel, but requires the 6rd tunnel ingress interface to drop any IPv6 packet larger than 1480 bytes and return an ICMPv6 Packet Too Big (PTB) message. Concerns for operational issues with both IPv4 and IPv6 Path MTU Discovery point to the possibility of MTU-related black holes when a packet is dropped due to an MTU restriction, so dropping packets is considered highly undesirable. Fortunately, the "Internet cell size" is 1500 bytes, i.e., the minimum MTU configured by the vast majority of links in the Internet. This document therefore presents a method to boost the 6rd MTU to 1500 bytes.}, }