Nov 30, 2018 · Any other hop limit makes those ICMPv6 messages invalid and will be discarded Those ICMPv6 messages are NEEDED for IPv6 to work. PfSense running on Qotom mini PC …

Jan 18, 2021 · ICMPv6 over the Internet is important for Path MTU Discovery (which uses the ICMPv6 Packet Too Big message) since ipv6 routers don't fragment packets. But I don't know …

Sep 11, 2018 · That test just needs ICMPv6 Echo Requests to be passed. Any other critical ICMPv6 packets (which I personally don’t consider Ping to be among) are already allowed …

May 26, 2022 · Certain ICMPv6 traffic should be allowed for proper IPv6 functionality. It is more important than with IPv4. I linked to the RFC 4890 document for the technical reasoning …

Apr 15, 2018 · Still looking for where the ICMPv6 is being dropped. Firewall logs do show dumped ICMPv6 packets dumped, though the log doesn't tell too much (type etc). Guess I will have to …

Jan 21, 2019 · HELP (Firewall) - Allow ICMPv6 for IPv6 Finally got IPv6 to work on Spectrum internet after hours of fighting. On the IPv6 test I get 18/20 with the only warning being that …

Jun 22, 2012 · IPv6 firewalls need to permit ICMPv6, type 2 (Packet Too Big) to work correctly with the public Internet. If you are implementing the IPv6 firewall for your web site, your …

Jul 9, 2020 · Allowing ICMPv6 I was troubleshooting an IPv6 problem with a particular machine on my network today and ended up at ipv6-test.com . I got a 17/20 score at that site with a …

Apr 27, 2020 · RFC 4890 recommends which ICMPv6 types should be allowed by firewalls. tl;dr look at sections 4.3.1 and later Edit: 4.3.1 covers this, but I just wanted to note that Packet Too …

Apr 29, 2017 · It can be a problem. IPv6 relies on something calling PMTUD (Path MTU Discovery) to work. Blocking ICMPv6 prevents PMTUD from working. Unfortunately, …