Last Modified: Wed, 14 Jun 2017 03:24:59 +0000 ; Created: Wed, 14 Jun 2017 03:24:59 +0000
Customize settings for Windows Firewall with Block all incoming connections, including those in the list of allowed apps
Transmit from the Windows system some IPv6 packets
Now, disable the Windows Firewall and you get responses.
A bug in Microsoft Windows 7 & 10 code it would appear. It fails to handle packets (tested both DNS and ICMP) originating from the Windows system going out.
Using IPv4 everything works fine.