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From: | Tim Epkes |
Subject: | Re: [Qemu-devel] Qemu-KVM VETH |
Date: | Tue, 24 Sep 2013 15:55:04 -0400 |
On Fri, Sep 20, 2013 at 11:48:50AM -0400, Tim Epkes wrote:I just checked linux.git but this patch has not been applied (although
> The problem aI face is that a bridge in the middle ( using taps) breaks
> LLDP ( L2 discovery protocol) and should break ISIS as well. Sockets
> aren't bad, but if for some reason I take the listener VM down and bring
> back up, then I have to bring down all connector VMs, which chains on
> itself if there is a lot of connectivity defined. When UDP was available
> that wasn't an issue.
it's trivial if you're willing to rebuild your kernel from source):
http://comments.gmane.org/gmane.linux.network/208908
It sounds like improving net/socket.c might be the right place to look.
Unfortunately the veth driver does not hand Ethernet frames to/from
> Anyway, that is how I came to VETHs. I am aware that you can use UDP
> multicast, but performance past one hop is extremely poor ( resulting in 3
> of 5 pings to be lost. Thanks
userspace. We really need something tap-like where userspace can
inject/extract packets.
Stefan
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