Date: Wed, 9 Apr 2025 12:51:26 +0200 (CEST) From: Ronald Klop <ronald-lists@klop.ws> To: Guido Falsi <madpilot@FreeBSD.org> Cc: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>, FreeBSD Current <freebsd-current@freebsd.org>, net@FreeBSD.org Subject: Re: RFC: Implementation of RFC 7217 [A Method for Generating Semantically Opaque Interface Identifiers, with IPv6 Stateless Address Autoconfiguration (SLAAC)] Message-ID: <1699210246.52160.1744195886991@localhost> In-Reply-To: <1b9603d8-7128-4809-9926-048426db122e@FreeBSD.org> References: <45b17684-75ef-4953-b59a-3c3b483ba21b@FreeBSD.org> <61dfdcac-4893-4c4b-b7e2-48164f1f0c80@plan-b.pwste.edu.pl> <1b9603d8-7128-4809-9926-048426db122e@FreeBSD.org>
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[-- Attachment #1 --] Hi, Next to hostuuid you could add a jailname in the mix. That is what ether_gen_addr(9) does to make it easier to prevent collisions while copying jails around or run a jail on a readonly shared base filesystem. Regards, Ronald. Van: Guido Falsi <madpilot@FreeBSD.org> Datum: woensdag, 9 april 2025 12:17 Aan: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>, FreeBSD Current <freebsd-current@freebsd.org>, net@FreeBSD.org Onderwerp: Re: RFC: Implementation of RFC 7217 [A Method for Generating Semantically Opaque Interface Identifiers, with IPv6 Stateless Address Autoconfiguration (SLAAC)] > > On 4/6/25 23:38, Marek Zarychta wrote: > > W dniu 6.04.2025 o 16:49, Guido Falsi pisze: > >> Hi! > >> > >> I have recently implemented and tested the patch at [1], which >> implements RFC 7217, about generating IPv6 addresses that are constant >> through reboots, but do not expose the MAC address of the machine, not >> being in any way derived by those. > >> > >> I'd like to get comments, testing and review for this patch, with the >> objective of getting approval to commit it to head once it is >> streamlined enough. > >> > >> BTW I'd like to thank cognet for his suggestions and help with the >> patch, in particular his help in finding the correct way to implement >> the dad_failures counter. > >> > >> > >> And thanks in advance to anyone willing to give feedback! > >> > >> > >> [1] https://reviews.freebsd.org/D49681 > >> > > This is great news for the community ! > > > > I've already started testing it on both a desktop and a laptop - which > is probably even more valuable, especially since the laptop will be > connecting to various networks. If I encounter any issues, I will post > comments in the review. > > I posted an updated patch, addressing feedback and containing some more improvements. > > If testing this new patch, the flag needs to be activated per interface with ifconfig(8) now, or via tunable in loader.conf. > > Should generate the same addresses it was generating before, with the only exception of the (relatively improbable) case that the previous patch was generating a reserved IPv6 address, which is now checked for and another one generated in such a case. > > -- > Guido Falsi <madpilot@FreeBSD.org> > > > > [-- Attachment #2 --] <html><head></head><body>Hi,<br> <br> Next to hostuuid you could add a jailname in the mix.<br> <br> That is what ether_gen_addr(9) does to make it easier to prevent collisions while copying jails around or run a jail on a readonly shared base filesystem.<br> <br> Regards,<br> Ronald.<br> <br> <p><strong>Van:</strong> Guido Falsi <madpilot@FreeBSD.org><br> <strong>Datum:</strong> woensdag, 9 april 2025 12:17<br> <strong>Aan:</strong> Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>, FreeBSD Current <freebsd-current@freebsd.org>, net@FreeBSD.org<br> <strong>Onderwerp:</strong> Re: RFC: Implementation of RFC 7217 [A Method for Generating Semantically Opaque Interface Identifiers, with IPv6 Stateless Address Autoconfiguration (SLAAC)]</p> <blockquote style="padding-right: 0px; padding-left: 5px; margin-left: 5px; border-left: #000000 2px solid; margin-right: 0px"> <div class="MessageRFC822Viewer" id="P"> <div class="TextPlainViewer" id="P.P">On 4/6/25 23:38, Marek Zarychta wrote:<br> > W dniu 6.04.2025 o 16:49, Guido Falsi pisze:<br> >> Hi!<br> >><br> >> I have recently implemented and tested the patch at [1], which >> implements RFC 7217, about generating IPv6 addresses that are constant >> through reboots, but do not expose the MAC address of the machine, not >> being in any way derived by those.<br> >><br> >> I'd like to get comments, testing and review for this patch, with the >> objective of getting approval to commit it to head once it is >> streamlined enough.<br> >><br> >> BTW I'd like to thank cognet for his suggestions and help with the >> patch, in particular his help in finding the correct way to implement >> the dad_failures counter.<br> >><br> >><br> >> And thanks in advance to anyone willing to give feedback!<br> >><br> >><br> >> [1] <a href="https://reviews.freebsd.org/D49681">https://reviews.freebsd.org/D49681</a><br>; >><br> > This is great news for the community !<br> ><br> > I've already started testing it on both a desktop and a laptop - which > is probably even more valuable, especially since the laptop will be > connecting to various networks. If I encounter any issues, I will post > comments in the review.<br> <br> I posted an updated patch, addressing feedback and containing some more improvements.<br> <br> If testing this new patch, the flag needs to be activated per interface with ifconfig(8) now, or via tunable in loader.conf.<br> <br> Should generate the same addresses it was generating before, with the only exception of the (relatively improbable) case that the previous patch was generating a reserved IPv6 address, which is now checked for and another one generated in such a case.<br> <br> -- <br> Guido Falsi <madpilot@FreeBSD.org><br> </div> <hr></div> </blockquote> <br> </body></html>
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