macos Sierra with CGA address?

Jeroen Massar jeroen at
Wed Dec 14 13:26:14 CET 2016

On 2016-12-14 13:10, Jeroen Massar wrote:
> [..]
>> 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.
> From xnu-3248.60.10/bsd/netinet6/in6_ifattach.c:

And after finding 10.12.1 sources (note that is not 10.12.2 which is out):

There is a lot more SEND/CGA/"LLCGA" related stuff in here:


in6_ifattach_llcgareq has:

	if (nd6_send_opstate == ND6_SEND_OPMODE_DISABLED)
		return (ENXIO);

Thus maybe one can disable it, if sysctl.conf has it disabled at
boot...... lets find out :)


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