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In-Reply-To: <alpine.DEB.2.20.1709071245380.29378@uplift.swm.pp.se>
References: <alpine.DEB.2.20.1709071245380.29378@uplift.swm.pp.se>
From: Erik Kline <ek@google.com>
Date: Thu, 7 Sep 2017 20:08:45 +0900
Message-ID: <CAAedzxpBz_Eh5_k84-8WZ+xOBHS4_CY20DwJ4biXrRi4Xr0nBA@mail.gmail.com>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: "v6ops@ietf.org" <v6ops@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/0rr-AxjoLFXOobioDA8KgSVXmdo>
Subject: Re: [v6ops] Microsoft Win10 source address selection woes
Precedence: list

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Is it expected that apps should make use of some
https://tools.ietf.org/html/rfc5014 API?

On 7 September 2017 at 19:53, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
>
> I am finding interesting behavior with my fully updated Win10. It seems to
> prefer "public" address over temporary, which doesn't seem to follow
> RFC6724. These addresses are all in the same /64, I am running with A=1.
>
> (obfuscated some fields)
>
>> netsh int ipv6 sho addr
>
>
> Interface 6: Ethernet
>
> Addr Type  DAD State   Valid Life Pref. Life Address
> ---------  ----------- ---------- ---------- ------------------------
> Temporary  Deprecated    5d2h5m1s         0s PREFIX:8403:XYZ:f15e:d720
> Temporary  Preferred    6d2h3m27s    2h1m57s PREFIX:a910:XYZ:ef8e:3484
> Public     Preferred  29d23h57m11s 6d23h57m11s PREFIX:c16d:XYZ:XYZ:a45c
> Other      Preferred     infinite   infinite fe80::c16d:fb79:XYZ:XYZ%6
>
> Now, when I use web browsers (firefox/chrome/edge) they all use the public
> address for outgoing connections. This is not what I expected (and not what
> I see on my MacOS machine).
>
> RFC6724 rule 7 seems it should indicate that temporary address should be
> chosen. However, RFC3484 says public addresses should be chosen over
> temporary ones, unless specific API calls are made.
>
> Does this mean Windows 10 doesn't implement RFC6724 but instead implements
> 3484?
>
> --
> Mikael Abrahamsson    email: swmike@swm.pp.se
>
> _______________________________________________
> v6ops mailing list
> v6ops@ietf.org
> https://www.ietf.org/mailman/listinfo/v6ops

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