First published on MSDN on Mar 24, 2014
In this blog, I will discuss some common questions pertaining to IPv6 and Windows Server 2012 R2 Failover Clusters.
W...
Published Mar 15, 2019
Version 1.0
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Worth mentioning that Neighbor Discovery Protocol must be functional. CoreNet-ICMP6-* Firewall rules must be enabled:
Get-NetFirewallRule -ID "CoreNet-ICMP6-*" | Enable-NetFirewallRule
Otherwise cluster nodes constantly gets quarantined.
https://serverfault.com/questions/976162/windows-server-2016-guests-in-wsfc-cluster-randomly-quarantined-due-dropping-hea
I re-enabled IPv6 on all adapters and reverted my tunnel related adapters/configs with:
...
That did not do the trick... Looking further I noticed that I also always disable "those unneeded" IPv6 related Firewall Rules... And that seemed to be the actually important Change! Those rules seem to affect the invisible adapter too.