Ping to Windows Server 2012 with Direct Access fails

Problem:┬áPing from Linux computers to Windows Server 2012 with Direct Access fails for hours (no response) although connectivity is working (eg. HTTPS) Discussion:┬áPing from other windows machines and Cisco machines worked, but from Linux machines ping was not answered. I tried to find the difference between those ICMP Echo Request Packets, and reduced it to …

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