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When (re-)joining an EL7 system to the AD domain, something somewhere issues a dynamic dns update for $FQDN. How can I suppress that?

The sssd.conf itself is pre-populated with

[domain/ad.example.com]
dyndns_update = false
dnydns_iface = eno1, eth0, otherpossibleprimarynicnames

I do not suffer from wanton dynamic dns updates during regular operations. But when re-joining the AD domain, all the ethernet cards' IP addresses magically show up in dns, which then causes havoc.

On EL6, I use the net ads join which has a nice option: --no-dns-updates but I see no equivalent option for the realm command.

If no options come up, I might just fall back to net ads join on EL7 and discard the "new and improved" realmd.

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I was simply unable to suppress the dynamic dns update action of realm. I reverted to using net ads join

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