On 12/14/2016 08:40 AM, Jeroen Massar wrote: > On 2016-12-14 12:25, Holger Zuleger wrote: >> Hi Jeroen, >> >>>> I found two or three posts in the internet, all mentioning (or hoping) >>>> that this is related to a change to RFC7217 as default IID mechanism. >>>> >>>> But one guy sad, that the source code (of 10.11) shows, that this is a >>>> cryptographic generated interface identifier for SeND (RFC3971). >>>> >>>> I tend to believe that the latter is true. >>> >>> Seeing how Apple implemented things like "Happy Eyeballs" it likely is >>> neither. And in the case of "Happy Eyeballs" there is no way to turn it >>> off either. Filing radar bugs clearly does not help as they never get >>> addressed or marked as 'dupe' at which point you do not know the status >>> of the 'original' problem and well, nothing happens... >> >> >>>> Has anyone more information about this? Especially how to configure it? >>> >>> The only trick I found out was: >>> >>> https://twitter.com/tweetsix/status/778615624444571649 >>> 8<------- >>> Also who has typed: "sudo sysctl -w net.inet6.ip6.maxifprefixes=1" (or >>> stored the setting in /etc/sysctl.conf) recently? ;) >>> --------->8 >> To be honest, that's definitively is not the way I like to go. >> >>> As then you only get the DHCPd address (requires DHCPv6 server....) on >>> your interface and not all the other magic ones that change all the time >>> and are extremely useless if you want to ADDRESS a host... >>> (yes, I love VNC'ing, SSH'ing and doing SSH-backups of my boxes...) >> Oh no, DHCPv6 is not needed here. > > Until Sierra, I didn't have any DHCPv6 either... but now I do because I > really love my static and known addresses. People know I have a Mac > anyway, thus what info am I losing there? > >> The problem is *not* that this IID is changing. It is a stable one. And >> yes, I vote not against temporary addresses. > > Actually, it is not a stable address as some have found out (read: > anecdotal), they also change at re-install and there are a couple of > other possibilities from what I recall.
One might argue that a reinstall results in a conceptualy different system. The fact that the underlying hardware is tha same is anecdotical. Thanks, -- Fernando Gont e-mail: [email protected] || [email protected] PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
