Hi,
On Wed, Aug 26, 2015 at 03:07:50PM +0200, Henning Rogge wrote:
> > Short-term reachability indications are sent to hosts in a reactive manner,
> > using ICMP unreachables. If any applications are unable to do the right
> > thing with ICMP unreachables, we should fix the applications.
>
> I am not aware of any application doing anything more than "try to
> open the connection again".
>
> How do you propose the application to react? Most applications leave
> the source-IP selection to the operation system...
>
> does any OS currently change the preference order of IPv6 source
> prefixes when it gets ICMP unreachable messages?
And that's a well-known issue that the IETF needs to finally tackle:
source-address failover. This is way bigger than just homenet-related,
as it will basically affect every host that has multiple equally-scoped
IPv6 addresses where one of them has intermittent failures.
Hosts need to learn to cope - the failure could be in the ISP1 network,
so there is nothing HNCP could do inside the homenet to signal "uh, btw,
do not use prefix1 for connections to ISP_Z, it's broken right now" (first,
it does not know the scope, second, it has no mechanism to tell).
Gert Doering
-- NetMaster
--
have you enabled IPv6 on something today...?
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