Cannot use NAT network on Windows 10

[AdrianR]

I'm trying to use a Ubuntu VM on two machines running Windows 10. The VM was copied from a Windows 8 machine where it works just fine. But on Windows 10, NAT networking doesn't work at all, the VM cannot connect to anything. I can use bridged adapter, but that doesn't allow me to use a VPN connected to the host Windows system, so I'm stuck. This is what ifconfig shows me, which looks the same as the guest on Windows 8, which works ok:

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eth0      Link encap:Ethernet  HWaddr 08:00:27:8b:2f:40  
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe8b:2f40/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:82 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1448 (1.4 KB)  TX bytes:11328 (11.3 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:213 errors:0 dropped:0 overruns:0 frame:0
          TX packets:213 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:32040 (32.0 KB)  TX bytes:32040 (32.0 KB)

I'm not sure what else is useful. Any help appreciated.

[anandp]

I have installed 2 Guest VMs - Ubuntu 15.04 on Win10 Host. I am using a wireless tata photon connection on my Win10 Host.
I want to do a network setup like that - Whenever I am connecting my tata photon device, my win10 will connect to internet at a same time my Guest VMs - Ubuntu 15.04 also need to access my internet.

I have tried Bridged Network / Host-Only Network but still not able to access the same.
Appreciate your prompt help.

My Host IP Details are as below:

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 Ethernet adapter VirtualBox Host-Only Network:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter
   Physical Address. . . . . . . . . : 0A-00-27-00-00-00
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::cd44:9e16:d3c5:f55b%8(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.165.1(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 151650343
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-8E-B5-27-70-54-D2-B0-99-34
   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

PPP adapter TATA PHOTON+:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TATA PHOTON+
   Physical Address. . . . . . . . . :
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 14.96.236.197(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . : 0.0.0.0
   DNS Servers . . . . . . . . . . . : 103.8.44.5
                                       103.8.45.5
   NetBIOS over Tcpip. . . . . . . . : Disabled

Ubuntu Network Connection Setup details are as below:

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eth0      Link encap:Ethernet  HWaddr 08:00:27:25:ac:24  
          inet addr:192.168.15.4  Bcast:192.168.15.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe25:ac24/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5 errors:0 dropped:0 overruns:0 frame:0
          TX packets:139 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2420 (2.4 KB)  TX bytes:23757 (23.7 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:8353 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8353 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:679325 (679.3 KB)  TX bytes:679325 (679.3 KB)

[mpack]

@anandp: Please create your own topic unless your issue as the same as the OP. The OP said that bridged is working, and he didn't mention host only: which in any case is useless for accessing a physical network. That is why it is called host only.