Minimum IPv6 MTU

[Fernando Gont <fernando at gont.com.ar>]

Folks,

RFC 2460 states that every link in an internet have an MTU of 1280 
octets or greater, and that any link that cannot convey a 1280-octet 
packet in one piece must provide fragmentation and reassembly at a 
layer bellow IPv6.

However, while talking about the specs with a few folks (who 
preferred to remain anonymous), it was mentioned to me that in a 
number of scenarios (not necessarily those that involve tunnels), 
some links have an MTU smaller than 1280, and they do not perform the 
"fragmentation and reassembly function at a layer bellow IP" that RFC 
2460 requires.

Any operational data or experiences with those link technologies will 
be more than welcome.... either on- or off-list.

Thanks!

Kind regards,

--
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at acm.org
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1




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