FWIW, I have exactly the same problem - and I have explicitly removed IPv6 support from all my network interfaces. Here is my output from
ipconfig:
Windows IP Configuration
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 192.168.100.254
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.100.1
Ethernet adapter Ethernet 2:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 10.8.0.1
Subnet Mask . . . . . . . . . . . : 255.255.255.252
Default Gateway . . . . . . . . . :
Tunnel adapter isatap.{6FE553B1-CF04-4241-9142-54FE45894284}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:34ac:b067:f:1875:3c9f:343
Link-local IPv6 Address . . . . . : fe80::f:1875:3c9f:343%3
Default Gateway . . . . . . . . . : ::
Tunnel adapter isatap.{2989F87F-BAAC-4EEC-86C1-10B754BA3FD3}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :