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In reply to Comment by Reader Mihai Moldovan

Andrew Ayer on 2015-01-11 at 16:31:

Thank you. This is extremely useful information. On Linux, optimistic DAD is controlled by the net.ipv6.conf.*.optimistic_dad sysctl (which is undocumented, which is why I did not know about it before now). I'll be testing this out and will update the blog post with my findings.

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