IPv6 DAD issue

I read different forums and blog [1] and it seems that the DAD issue is occurring offen with jails and is not only related to mce [2] . Is there any trick as of today that would help to fix it? I have tempted to report also on the forum but didn't get any answer yet [3]

I always need for now to remove DA both on the system but also any jails using vnet. Is there any external issue that could cause this issue?

Any help/hint is welcome :)

Benoît

[1] https://dan.langille.org/2023/03/10/is-your-jail-not-getting-an-ipv6-address-soon-enough-blame-dad/
[2] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270859
[3] https://forums.freebsd.org/threads/how-to-solve-error-vnet0-a-looped-back-ns-message-is-detected-during-dad.89888/