In Windows 10 fast track, if Bitdefender is turned off, the following work:
Code:
C:\Users\jar_2>nslookup www.yahoo.com
Server:  cdns01.comcast.net
Address:  2001:558:feed::1


Non-authoritative answer:
Name:    fd-fp3.wg1.b.yahoo.com
Addresses:  2001:4998:58:c02::a9
          2001:4998:44:204::a7
          98.139.183.24
          98.139.180.149
          98.138.252.30
          98.138.253.109
Aliases:  www.yahoo.com




C:\Users\jar_2>ping www.yahoo.com


Pinging fd-fp3.wg1.b.yahoo.com [2001:4998:58:c02::a9] with 32 bytes of data:
Reply from 2001:4998:58:c02::a9: time=52ms
Reply from 2001:4998:58:c02::a9: time=52ms


Ping statistics for 2001:4998:58:c02::a9:
    Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 52ms, Maximum = 52ms, Average = 52ms


C:\Users\jar_2>ping 98.139.183.24


Pinging 98.139.183.24 with 32 bytes of data:
Reply from 98.139.183.24: bytes=32 time=57ms TTL=52
Reply from 98.139.183.24: bytes=32 time=50ms TTL=52


Ping statistics for 98.139.183.24:
    Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 50ms, Maximum = 57ms, Average = 53ms
but if BD is turned on,
Code:
ping www.yahoo.com
does not work.
Code:
ping 98.139.183.24
does work.
Bitdefender keeps blaming it on my system. Can anyone else reproduce this?