Re: RFC: Implementation of RFC 7217 [A Method for Generating Semantically Opaque Interface Identifiers, with IPv6 Stateless Address Autoconfiguration (SLAAC)]

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>