Date: Wed, 9 Apr 2025 13:19:30 +0200 From: Guido Falsi <madpilot@FreeBSD.org> To: Ronald Klop <ronald-lists@klop.ws> 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: <0a6709f8-275c-4c18-b195-1333a44fd1a7@FreeBSD.org> In-Reply-To: <6e3dd061-f377-4f20-bcd1-f1a5afeaa36f@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> <1699210246.52160.1744195886991@localhost> <6e3dd061-f377-4f20-bcd1-f1a5afeaa36f@FreeBSD.org>
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On 4/9/25 13:10, Guido Falsi wrote: > On 4/9/25 12:51, Ronald Klop wrote: >> 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. > > The RFC is very clear on what should be used to derive the address, so > I'm not very keen on adding things around. > > The UUID should be changed when copying jails that run in parallel, they > ARE different machines. although I am also at fault here. > > But the jailname is the correct parameter? This would change the address > if the name is changed, which could be ok I guess. > > I'd also add this parameter only if actually jailed, skipping it for the > host. > > My real issue with this approach is, the RFC is quite detailed on hash > parameters. Will the implementation still be conforming if adding local > ones? > > BTW, this is easy to add and also add conditionally on being jailed or not, I'd just like some consensus on this before adding, especially the RFC compliance issue. -- Guido Falsi <madpilot@FreeBSD.org>
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