-- v3: iphlpapi/tests: Add tests for Icmp6SendEcho2(). iphlpapi: Implement Icmp6SendEcho2(). nsiproxy.sys: Don't try to check for original packet for ping socket. iphlpapi: Implement Icmp6CreateFile(). iphlpapi: Implement Icmp6ParseReplies(). iphlpapi: Only supply APC routine if no event in icmp_send_echo(). iphlpapi/tests: Refactor APC testing in testIcmpSendEcho(). iphlpapi: Factor out icmp_send_echo() function. nsiproxy.sys: Store socket type in struct icmp_data.