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Broadcast Raw Packet problem between VBox VMs on diff. nodes

Posted: Wed Oct 14, 2015 3:42 pm
by kemosparc
Hi,

I have a problem with broadcast packets.

I have 4 VMs running my OS (each 2 on a host) with bridged network, and my OS continuously sends broadcast packets every preset number of pits.

The problem is that each 2 VMs that are located on the same host can see the packets of each other.

I mean that the linux OS underneath does not let the broadcast packets go on to the network.

The packets are special packets with Ethernet type of my own (0x0333)

When I ping any of the machines they respond from anywhere on the network, also I can use a built in http server in my OS, so TCP traffic works well from anywhere on the LAN.

When I run tcpdump on any of the two hosts I can only see the broadcast packets of the VMs running on it.

Any ideas what might be the problem.

Thanks,
Kemosparc.

Re: Broadcast Raw Packet problem between VBox VMs on diff. n

Posted: Wed Oct 14, 2015 4:00 pm
by iansjack
The machines are on the same IP network? And all 4 VMs are also on that network? Do they have static addresses or do they get them via DHCP? Any firewalls running on the Linux hosts?

Re: Broadcast Raw Packet problem between VBox VMs on diff. n

Posted: Wed Oct 14, 2015 4:15 pm
by kemosparc
Same physical network/switch.

The 4 machine has static IPs 11.0.0.31-4

Reachable by ping from anywhere on the same network.

Thanks,
kemosparc.

Re: Broadcast Raw Packet problem between VBox VMs on diff. n

Posted: Wed Oct 14, 2015 4:32 pm
by kemosparc
One more update


On Qemu it works with no problems.

Thanks,
Kemosparc.