LinuxQuestions.org - Virtualbox guestproperty shows No value set! problem

I have virtualbox ose 4.1.6 on debian wheezy with 2 vms installed and working well.

Now the problem is when starting the first vm e.g. server 1. And executing `VBoxManage guestproperty get server1 "/VirtualBox/GuestInfo/Net/0/V4/IP"`

it shows `No value set!'

However, the server 1 is running and its network connection is up and working well.

Code:

host www.google.com

www.google.com is an alias for www.l.google.com.

www.l.google.com has address 74.125.71.106

www.l.google.com has address 74.125.71.147

www.l.google.com has address 74.125.71.99

www.l.google.com has address 74.125.71.103

www.l.google.com has address 74.125.71.104

www.l.google.com has address 74.125.71.105

ping other server e.g. server 2 has no problem and can access to the internet.

Code:

PING server2.domain.org (192.168.0.123) 56(84) bytes of data.

64 bytes from server2.domain.org (192.168.0.123): icmp_req=1 ttl=64 time=2.50 ms

This is not a problem with server 2 where it will display

Code:

VBoxManage guestproperty get server2 "/VirtualBox/GuestInfo/Net/0/V4/IP"

Value: 192.168.0.123

Where can I check what goes wrong? Or what might be the root problem?

Thanks.