svn commit: r344859 - in head: sbin/ifconfig sys/net sys/netinet6

[Bjoern A. Zeeb]

On 6 Mar 2019, at 23:39, Rodney W. Grimes wrote:

>> Author: bz
>> Date: Wed Mar  6 23:31:42 2019
>> New Revision: 344859
>> URL: https://svnweb.freebsd.org/changeset/base/344859
>>
>> Log:
>>   Update for IETF draft-ietf-6man-ipv6only-flag.
>>
>>   All changes are hidden behind the EXPERIMENTAL option and are not 
>> compiled
>>   in by default.
>
> It is probably time to make EXPERIMENTAL finer grain,
> there are likely more than one experiment to be avaliable
> in the tree at the same time, and having them all use this
> one knob is a bit of a pita.

I added the knob to encourage people putting more stuff under it.

Making it finer grained did not seem to be a good idea at the time.   
For that we do have individual kernel options.

If you are saying that I should add an extra layer of #ifdef under 
EXPERIMENTAL such as #ifdef EXP_IPV6_ONLY_FLAG, adding such a kernel 
option seems plausible though a pain when this either goes away entirely 
or becomes mainline and in either case would not be under an extra 
option.

/bz