Experiences with IPv6 and Routing Efficiency

[nick at foobar.org (Nick Hilliard)]

On 18/01/2014 04:09, Mukom Akong T. wrote:
> Does anyone have any experiences or insights to share on how  more (or
> less) efficient routing is with IPv6? Any specific thoughts with respect to
> how the following characteristics help or not with routing efficiency?
> - fixed header size
> - Extension header chain
> - flow labels in header
> - no intermediate fragmentation
> - no checksums

extension headers are a poor idea because it's troublesome to process them
on cheap hardware.  Because of this, packets with any sort of extension
headers are routinely dropped by a large percentage of organisations.  Flow
labels are generally unused (i.e. set to zero by many host stacks).

Nick