Re: [exim] option "interface" in smtp transport and ipv6

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Szerző: Marcin Mirosław
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Címzett: exim-users
Tárgy: Re: [exim] option "interface" in smtp transport and ipv6
W dniu 02.07.2010 04:56, Phil Pennock pisze:
> On 2010-07-01 at 23:45 +0200, Marcin Mirosław wrote:
>> P.S. Let's imagine there are more than one physical interface with v4
>> and more than on with v6. In router i'm putting:
>> interface = <; 1.2.3.4 ; 2001::1234:4321
>> In this case, mail would be send:
>> a) if domain has only A -> with outgoing ip 1.2.3.4
>> b) if domain has only AAAA -> with outgoing ip 2001::1234:4321
>> c) if domain has both records - > with outgoing ip 2001::1234:4321
>> (because ipv6 is preffered over v4)
>> ?
>
> Correct.


Now it's clear for me. v4 and v6 are almost completly separate layers.
If i configure something i shouldn't glue (in my mind) ips v4 and v6.
It's clear when i'm writing rules for iptables, but i'm forgetting about
it while i'm making changes to exim.

> Depending upon your OS, you may be able to change the
> preference ordering; it's RFC 3484, "Default Address Selection for


I'm preffering v6 over v4.

Thank you for help and patience.
Regards,
Marcin