Lightstreamer under OpenVZ virtualization

malahit

Hi,

I'm trying to use Lightstreamer under OpenVZ virtualization with java 6 and can't install the license because "MAC address check failed".

As I see the problem probably in java.net.NetworkInterface.getHardwareAddress() which returns null for the virtual network interface.

Is there some solution?

Alessandro Alinone

Hi,

Usually getHardwareAddress works great for virtual network interfaces too. This is the first time such issue is reported. Did you give the Java process the right privileges (root) to access the network interface?

Does "ifconfig -a" report any network interfaces?

malahit

ifconfig output looks like this:

# ifconfig -a
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:16436 Metric:1
RX packets:736 errors:0 dropped:0 overruns:0 frame:0
TX packets:736 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:39268 (39.2 KB) TX bytes:39268 (39.2 KB)

venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:127.0.0.1 P-t-P:127.0.0.1 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
RX packets:448198 errors:0 dropped:0 overruns:0 frame:0
TX packets:396909 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:229352384 (229.3 MB) TX bytes:59166897 (59.1 MB)

venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:195.10.77.96 P-t-P:195.10.77.96 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1

## arp -v
Entries: 0 Skipped: 0 Found: 0

And yes, I've tried to execute getHardwareAddress() from root - result is null

Alessandro Alinone

From the ifconfig output, it really seems that your virtualization system is not giving any MAC address to your network interface.

Both HWaddr report "00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00" instead of a MAC address.

So you should fix your virtualization configuration by enabling virtual MAC addresses-

malahit

I'm not sure the hosting provider would do it for me))

Ok, thank you for the help.

Alessandro Alinone

If MAC address support is not available in your infrastructure, please get back to support@lightstreamer.com, and we'll try to understand your needs better and perhaps work out a solution.

Thanks
Alessandro