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Date:      Wed, 28 Jan 2026 18:37:30 +0100
From:      Guido Falsi <madpilot@FreeBSD.org>
To:        Pouria Mousavizadeh Tehrani <pouria@FreeBSD.org>, =?UTF-8?Q?Olivier_Cochard-Labb=C3=A9?= <olivier@freebsd.org>
Cc:        freebsd-current@freebsd.org
Subject:   Re: we should enable RFC7217 by default
Message-ID:  <80344ea0-02fb-486c-817a-6c69094d8655@FreeBSD.org>
In-Reply-To: <4a83b581-1960-48b5-a589-ee47d85e8f18@FreeBSD.org>
References:  <9cda2fbc-b8fb-44d1-8c1f-88395d741af7@FreeBSD.org> <CA%2Bq%2BTcp0E4-OL%2BTzCwaqaKDqPMG85PpG5m=rkpN7O6pWhroAxA@mail.gmail.com> <4a83b581-1960-48b5-a589-ee47d85e8f18@FreeBSD.org>

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On 1/27/26 22:15, Pouria Mousavizadeh Tehrani wrote:
> On 1/27/26 4:56 PM, Olivier Cochard-Labbé wrote:
>> In a server environment, administrators typically assign static IPv6 
>> addresses manually and do not use the EUI-64 method.
> To add a note, administrators usually avoid *using* EUI-64 addresses for 
> production, especially for their DNS records.
> However, they often have an EUI-64 address because having default routes 
> and other parameters automatically configured by accept_rtadv is 
> convenient.
> That's why I believe there will be an impact on servers. however, as you 
> said, it's not an issue here.
> 
> At least, we use accept_rtadv in our production AND people typically 
> configure their rtadvd with the autonomous bit. So this results in 
> having EUI-64 addresses on the servers, which may be used in source 
> selection.
> 
> I would like to kindly request @madpilot to create this patch for 
> review, including a note in the UPDATING file, if everyone is in agreement.
> 

I will create a review with this changes soon.

But at present my priority is getting the feature MFCed to stable/15

-- 
Guido Falsi <madpilot@FreeBSD.org>



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