[libvirt-users] lxc arp doesn't work at start for several seconds

[Jonathan Rudenberg]

On Jul 26, 2014, at 2:05 PM, Jonathan Rudenberg <jonathan at titanous.com> wrote:

> I’m running into an issue with libvirt-lxc networking. I have an init program that configures the eth0 interface with an IP and gateway when the container starts. I noticed that programs running in the container encountered “no route to host” errors and looked into it further. What I found is that ARP packets are not making it onto the gateway during the first few seconds of the container’s life.

I found the issue: STP was enabled on the virbr0 which spends 2s in each of the Listening and Learning states by default before enabling the interface.

A simple `brctl stp virbr0 off` solves this issue.

Jonathan