Connect to a Windows XP VM router PS.: IPEnableRouter activated in the Windows XP Registers

ubuntu-12.04 config

developer@ubuntu:~$ ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:0c:29:54:3d:be  
          inet addr:192.168.21.128  Bcast:192.168.21.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe54:3dbe/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:169 errors:0 dropped:0 overruns:0 frame:0
          TX packets:367 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:22809 (22.8 KB)  TX bytes:53298 (53.2 KB)
          Interrupt:19 Base address:0x2000 

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:172 errors:0 dropped:0 overruns:0 frame:0
          TX packets:172 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:11602 (11.6 KB)  TX bytes:11602 (11.6 KB)

---------------------------------------------------------------------------------

developer@ubuntu:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.21.130  0.0.0.0         UG    0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0
192.168.21.0    0.0.0.0         255.255.255.0   U     1      0        0 eth0

----------------------------------------------------------------------------------

developer@ubuntu:~$ ping 192.168.21.130
PING 192.168.21.130 (192.168.21.130) 56(84) bytes of data.
64 bytes from 192.168.21.130: icmp_req=1 ttl=128 time=0.202 ms
64 bytes from 192.168.21.130: icmp_req=2 ttl=128 time=0.425 ms
64 bytes from 192.168.21.130: icmp_req=3 ttl=128 time=0.566 ms
^C
--- 192.168.21.130 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.202/0.397/0.566/0.151 ms

----------------------------------------------------------------------

developer@ubuntu:~$ ping 192.168.107.133
PING 192.168.107.133 (192.168.107.133) 56(84) bytes of data.
64 bytes from 192.168.107.133: icmp_req=1 ttl=128 time=0.222 ms
64 bytes from 192.168.107.133: icmp_req=2 ttl=128 time=0.597 ms
64 bytes from 192.168.107.133: icmp_req=3 ttl=128 time=0.360 ms
^C
--- 192.168.107.133 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 0.222/0.393/0.597/0.154 ms

------------------------------------------------------------------------

developer@ubuntu:~$ ping 192.168.107.2
PING 192.168.107.2 (192.168.107.2) 56(84) bytes of data.
^C
--- 192.168.107.2 ping statistics ---
8 packets transmitted, 0 received, 100% packet loss, time 7018ms

windows-xp config

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\admin>ipconfig

Windows IP Configuration


Ethernet adapter Local Area Connection 5:

        Connection-specific DNS Suffix  . : localdomain
        IP Address. . . . . . . . . . . . : 192.168.21.130
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection 6:

        Connection-specific DNS Suffix  . : localdomain
        IP Address. . . . . . . . . . . . : 192.168.107.133
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.107.2

Ethernet adapter Network Connect Adapter:

        Media State . . . . . . . . . . . : Media disconnected

Ethernet adapter Bluetooth Network Connection:

        Media State . . . . . . . . . . . : Media disconnected

-----------------------------------------------------------------------

C:\Documents and Settings\admin>ping 192.168.21.128

Pinging 192.168.21.128 with 32 bytes of data:

Reply from 192.168.21.128: bytes=32 time<1ms TTL=64
Reply from 192.168.21.128: bytes=32 time=1ms TTL=64
Reply from 192.168.21.128: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.21.128:
    Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 1ms, Average = 0ms

--------------------------------------------------------------------------

C:\Documents and Settings\admin>ping 192.168.107.2

Pinging 192.168.107.2 with 32 bytes of data:

Reply from 192.168.107.2: bytes=32 time<1ms TTL=128
Reply from 192.168.107.2: bytes=32 time<1ms TTL=128
Reply from 192.168.107.2: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.107.2:
    Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms