Oh thanks for that. Is there a plan to MFC?
On Sat, Jun 23, 2018 at 8:29 PM Ian Lepore <i...@freebsd.org> wrote:
>
> Author: ian
> Date: Sun Jun 24 03:29:00 2018
> New Revision: 335595
> URL: https://svnweb.freebsd.org/changeset/base/335595
>
> Log:
> Modernize usage of "restrict" keyword in ntp.conf
>
> It is no longer necessary to specify a -4/-6 flag on any ntp.conf
> keyword. The address type is inferred from the address itself as
> necessary. "restrict default" statements always apply to both address
> families regardless of any -4/-6 flag that may be present.
>
> So this change just tidies up our default config by removing the redundant
> restrict -6 statement and comment, and by removing the -6 flag from the
> restrict keyword that allows access from localhost.
>
> This change was inspired by the patches provided in PRs 201803 and 210245,
> and included some contrib/ntp code inspection to verify that the -4/-6
> keywords are basically no-ops in all contexts now.
>
> PR: 201803 210245
> Differential Revision: https://reviews.freebsd.org/D15974
>
> Modified:
> head/etc/ntp.conf
>
> Modified: head/etc/ntp.conf
> ==============================================================================
> --- head/etc/ntp.conf Sat Jun 23 23:44:36 2018 (r335594)
> +++ head/etc/ntp.conf Sun Jun 24 03:29:00 2018 (r335595)
> @@ -62,15 +62,13 @@ pool 0.freebsd.pool.ntp.org iburst
> # See http://support.ntp.org/bin/view/Support/AccessRestrictions
> # for more information.
> #
> -restrict default limited kod nomodify notrap noquery nopeer
> -restrict -6 default limited kod nomodify notrap noquery nopeer
> -restrict source limited kod nomodify notrap noquery
> +restrict default limited kod nomodify notrap noquery nopeer
> +restrict source limited kod nomodify notrap noquery
>
> #
> # Alternatively, the following rules would block all unauthorized access.
> #
> #restrict default ignore
> -#restrict -6 default ignore
> #
> # In this case, all remote NTP time servers also need to be explicitly
> # allowed or they would not be able to exchange time information with
> @@ -85,7 +83,7 @@ restrict source limited kod nomodify notrap noquer
> #
> # The following settings allow unrestricted access from the localhost
> restrict 127.0.0.1
> -restrict -6 ::1
> +restrict ::1
>
> #
> # If a server loses sync with all upstream servers, NTP clients
>
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