Did anyone else on CentOS 6 just have some DNS resolvers totally fall over?

I noticed that this command: dnssec-lookaside auto; was causing the issue. The issue occurred right at about 1PM EST.

I see this note in the ISC key file..

# ISC DLV: See https://www.isc.org/solutions/dlv for details.

        #

        # NOTE: The ISC DLV zone is being phased out as of February 2017;

        # the key will remain in place but the zone will be otherwise empty.

        # Configuring "dnssec-lookaside auto;" to activate this key is

        # harmless, but is no longer useful and is not recommended.

It’s not harmless anymore.