Not sure if it is me or what, but I noticed a dynamic DNS entry for my Cisco IOS device and my IPv6 tunnels were not being updating on their own for a while. And apparently that goes around the date when I enabled 2 factor authentication on my HE account.
Is this something others are perceiving too? I did not changed anything on my current configuration in regarding of the DynDNS or my tunnel after I found out about Unicast RPF strict mode
Thanks and regards.