Is IPV6 option still necessary?

[abi]

07.10.2019 09:18, Yasuhiro KIMURA пишет:
> On October 10, 2012 IPV6 option of all ports was enabled by
> default. Commit message said "We are in 2012, it is time to activate
> IPV6 options by default everywhere".
>
> And now we are in 2019. IPv6 is more widely used than 2012. So I
> wonder if IPV6 option is still necessary.
>
> If you use official packages then you always use IPv6-enabled
> binaries. And even if you build packages by yourself you still use
> IPv6-enabled ones unless you disable IPV6 option. So I think at most
> only a few people uses IPv6-disabled packages.
>
> Are there anybody who still disables IPV6 option for some serious
> reason such as working around IPv6-related problem? If there aren't
> then I think it's time to remove IPV6 option from ports framework.
>
I'm writing from 2019 and I build kernel and ports without IPv6. For all 
this years I fail to understand why I need it.

My home devices fit 10.0.0.0/16 nicely, I have faith in NAT and I 
encountered no IPv6-only sites.

But I saw CVEs in IPv6 stack.