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Re: Connecting VM eth0 to guest tap device [message #12051 is a reply to message #11764]

Mon, 16 April 2007 13:10

HRogge
Messages: 16
Registered: April 2007

Junior Member

I just did a few experiments with a pair of bridges each connecting a OpenVZ instance with a tap device. By using tcpdump I dicovered a problem:

- the bridges receive broadcasts from the VMs and transmit them into the tap devices.
- the packets are received on the tap devices, processed and retransmitted through the other tap device as a broadcast (I can see both VMs on each of the tap devices with tcp dump)

- but the retransmitted packages are not send back through the bridge to the VMs ! (I tried tcpdump on the bridges, on the veth devices on the host and on the eth devices on the VM, I only see on VM in the output !)

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[Message index]

		Connecting VM eth0 to guest tap device By: HRogge on Thu, 05 April 2007 11:39
		Re: Connecting VM eth0 to guest tap device By: Vasily Tarasov on Fri, 06 April 2007 09:00
		Re: Connecting VM eth0 to guest tap device By: HRogge on Fri, 06 April 2007 19:56
		Re: Connecting VM eth0 to guest tap device By: dev on Sat, 07 April 2007 09:54
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 10 April 2007 07:08
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 10 April 2007 07:37
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 10 April 2007 08:39
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 10 April 2007 08:48
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 10 April 2007 09:10
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 10 April 2007 09:37
		Re: Connecting VM eth0 to guest tap device By: HRogge on Mon, 16 April 2007 13:10
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 06:32
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 17 April 2007 08:53
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 09:22
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 17 April 2007 09:33
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 10:35
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 10:59
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 17 April 2007 11:05
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 12:04
		Re: Connecting VM eth0 to guest tap device By: dev on Tue, 17 April 2007 12:24
		Re: Connecting VM eth0 to guest tap device By: HRogge on Tue, 17 April 2007 13:05

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