Templin, Fred L wrote: > General statement for IPv6-in-IPv4 tunneling, yes. But > inner fragmentation applies equally for *-in-* tunneling. > >> Even though you assume tunnel MTU 1500B > > What I am after is a tunnel MTU of infinity. 1500 is > the minimum packet size that MUST get through. 1501+ > packets are admitted into the tunnel unconditionally > in hopes that they MIGHT get through.
Infinity? You can't carry 65516B in an IPv4 packet. > My document also allows for outer fragmentation on the > inner fragments. But, like the RFC4213-derived IPv6 > transition mechanisms treats outer fragmentation as > an anomalous condition to be avoided if possible - not > a steady state operational approach. See Section 3.2 > of RFC4213. Instead, see the last two lines in second last slide of: http://meetings.apnic.net/__data/assets/file/0018/38214/pathMTU.pdf It is a common condition. Masataka Ohta
