Re: git: 9e469437993b - main - inet.4: drop "experimetal use" from net0 and net240 descriptions

On Wed, 13 Nov 2024, Ed Maste wrote:

> On Tue, 12 Nov 2024 at 08:56, Zhenlei Huang <zlei@freebsd.org> wrote:
>>
>> Emm, while I was reviewing this change, I also wondered if it is too early to remove the word *experimental* as the RFC is still in draft status. Well later I think ( maybe I'm wrong ) RFC actually lag behind the reality ( I'm saying FreeBSD as a vendor and move fast action ) so I think it is OK to remove now.
>
> My argument for the man page update was that the sysctl controls use
> of those addresses, regardless of purpose. Note that the sysctl
> description captures this subtle distinction already:
>
> net.inet.ip.allow_net240: Allow use of Experimental addresses, aka
> Class E (240/4)
>
> That is, it's "... use of Experimental addresses ..." not "...
> experimental use of ..."
>
> Unfortunately it's a bit more of a mess than that. Most operating
> systems are allowing 240/4 by default and as it turns out we
> (unintentionally?) also allow configuring 240/4 the host's IPv4
> address already. This sysctl actually controls only forwarding, and
> we'll need to update anyway. I'm inclined to indicate in the man page
> that these sysctls control forwarding, and add a note along the lines
> of "at time of writing this region is reserved."

Sounds good to me.  Thank you!

/bz

-- 
Bjoern A. Zeeb                                                     r15:7