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Go to this topic to see some of my fixes for no incoming IPv6.

https://forum.opnsense.org/index.php?topic=27518.msg133535#msg133535

Last note to add... If using a bridge for multiple lan ports, I would enable "link-local address"

BTW...  Below is a filter log showing before (bogons enabled) and after (bogons disabled) in reference to WAN Interface and auto generated rules for bogons and bogons6.

2022-03-20T13:16:56-04:00   Informational   filterlog   89,,,b579a47ecb727243a964c96ea06cd06a,igb7,match,pass,in,6,0xe0,0x00000,1,icmp,1,36,fe80::2b0:yada:yada:5419,ff02::1,truncated-ip6=36   
2022-03-20T13:14:51-04:00   Informational   filterlog   70,,,730b04035be750d29de5c32523480cf5,igb7,match,block,in,6,0xe0,0x00000,1,icmp,1,36,fe80::2b0:yada:yada:5419,ff02::1,truncated-ip6=36

Since the last 2 updates and additional automatic rules added I found similar issues. I'm posting with screenshots to show my work.  The floating I added the fe80::/10 to ff02::/16 due to Auto Rule wasn't working for me.  The LAN I had to clone and delete the original Defaults to get them to work again.  The WAN I added "Allow All ICMP Inbound", Disabled BOGONS on WAN Interface (because AUTO Rule  was blocking my WAN GW address fe80::yada:yada from my ISP to LAN ff02::1 Multicast address, then manually enter the bogons rules.  Hope this will help you.  Been a learning experience for me...