Hi, I just realized that the permanent interface identifier of my MAC has changed after upgrading to OS 10.12 (I guess).
The output of ifconfig shows a new "secured" flag at the permanent address. $ ifconfig en0 | grep inet6 | \ > sed "s/2[^:]*:[^:]*:[^:]*:[^:]*:/<prfx48>:/" inet6 fe80::c54:6333:ac12:c67b%en0 prefixlen 64 secured scopeid 0x4 inet6 <prfx48>:20e3:84f6:6794:5ace prefixlen 64 autoconf secured inet6 <prfx48>:8822:a8a3:b6ec:a79b prefixlen 64 autoconf temporary 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. Has anyone more information about this? Especially how to configure it? Best Regards Holger
smime.p7s
Description: S/MIME Cryptographic Signature
