[AusNOG] IPv6

[Mark Andrews]

In message <60234695.15753.1428113919407.JavaMail.yahoo at mail.yahoo.com>, Mark Z
ZZ Smith writes:
>
> So according to Christian Huitema in "IPv6: The New Internet Protocol",
> 2nd edition, they did consider swapping the source and destination fields
> around in around 1996, after the IPv6 specs were pretty much finalised,
> yet doing something as significant as that was still achievable because
> there weren't any implementations around.
>
> However, they thought that for the cases where swapping them around would
> make a performance difference (i.e., where the header portions containing
> the src & dst addr were read in multiple parts) it was likely that the
> source address would also be a possible input into forwarding, so leaving
> the order as it is was best.

Yes, was discussed and source based routing is coming to a net near
you soon.  Homenet uses source address routing to get packets to
the correct exit router. 

Mark

> Regards,Mark.
>       From: David Beveridge <dave at bevhost.com>
>  To: Chris Hurley <chris at minopher.net.au>
> Cc: "ausnog at lists.ausnog.net" <ausnog at lists.ausnog.net>
>  Sent: Wednesday, 1 April 2015, 7:30
>  Subject: Re: [AusNOG] IPv6
>
>
>
> On Tue, Mar 31, 2015 at 11:49 PM, Chris Hurley <chris at minopher.net.au>
> wrote:
>
> While I appreciate the horse has well and truly bolted the BIGGEST mistake
> in IPv6 was not making it backwardly compatible with IPv4.
>
> IPv6 is not incompatible with IPv4, both can be run together on the same
> machine.For what it's worth, I think the biggest mistake with IPv6 was
> putting the destinationaddress an the end of the header instead of the
> start.  A router must wait for the entire header to be received before it
> can start switching the packet. 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org