eset firewall has default icmpv6 rules:
allow necessary incoming icmpv6 type 1,2,3,4,129,130,131,132,133,134,135,136.
So I really want CFW like eset firewall does: fully close Windows defender Firewall and totally controled by CFW
Last,Thx for bring us best hips and firewall!
You just need to allow ICMP for Packet too big, Time Exeeded and then 134,0 & 135,0 & 136,0 if you have Stealth Ports set to Block Incoming. If your still having issue, can you post FW logs.