RFC Merge request !2271 - DNS updates allow/deny for SAMBA_INTERAL dns server.

[Matt Grant]

Hi!

Could some of the Samba Team please have a look at the following:

https://gitlab.com/samba-team/samba/-/merge_requests/2271

Could I please have your thoughts on the code changes, and a bullet list of
the tests that you believe are required for the Samba test suite.

Here is a summary of what this patch does:

Mechanism for DNS update host/rrnet allow/deny lists. Three functions
dns_update_check_access(), dns_update_get_caddr() (gets subject address for
check from A, AAAA, and PTR records), and dns_update_ipaddr_check_access()
are backended by allow_access_flag_lo() from lib/util/access.c using the
already existing host allow/deny access mechanism.

Thank you so very much!

Best Regards,

Matt Grant
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