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Accepting IPv6 ICMP on UDM and USG routers

There’s no clear instruction on how to allow this via the Unifi Controller. On my UDM running 1.5.6.2150 the solution is to Accept ICMPv6 protocol on the WAN-Local interface of the Firewall. This allows you to get 10/10 from the test site http://test-ipv6.com. If you’re using this test https://ipv6-test.com the results are different on Safari, Chrome and Firefox for me. Many comments say the ICMP test is broken and not to worry if you can’t get 20/20. Here is an external ping service to test whether you are reachable.

 

 

Here’s what 20/20 result looks like:

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