Vm can't talk with DHCP server with LinuxBridgeDriver plugin

[Nachi Ueno]

I'm trying to use quantum linux bridge driver with trunk devstack.
However it is not working

This structure looks created.

[ VM ][vm_eth0]---[tap1]---[bridge]-----[tap2 (192.168.100.2)]---DNSMASQ
                                          |
                                          +-----[eth0.1000]

However dhcp packet didn't reach VM.
I tried to set 192.168.100.3 to VM manually

[ VM (192.168.100.3) ][vm_eth0]---[tap1]---[bridge]-----[tap2
(192.168.100.2)]---DNSMASQ
                                          |
                                          +-----[eth0.1000]

However ping from VM to tap2 is not reach. ( I can observe arp packet
on tap1 and bridge. But I can't for tap2 )

[Nachi Ueno (nati-ueno)]

We are investigating this problem now

[dan wendlandt (danwent)]

garyk has been seeing this as well. may want to coordinate troubleshooting with him. Would be great if you could look into this.

[Nachi Ueno (nati-ueno)]

Hi Dan

yes. I'm talking with Gary about this problem.
Gary let me create this bug :)

[Mark McClain (markmcclain)]

Nachi-

I changed the device type that DHCP uses for the linuxbridge in the network namespace branch. That change should address this bug too. Are you seeing problems in that branch?

[Nachi Ueno (nati-ueno)]

Hi Mark
Ok I'll try linuxbridge in the network namespace branch!

[Akihiro Motoki (amotoki)]

Hi Mark and Nachi,
I would like to use DHCP with linuxbridge plugin and have the same problem.
But i could not find the network namespace branch.
Could you share a pointer or URL?

[Nachi Ueno (nati-ueno)]

> Mark
LinuxBridge works in netns branch :)
Could you take this bug?

> Akihiro
The branch is here
https://github.com/markmcclain/quantum/tree/netns

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10270

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10369

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/10369
Committed: http://github.com/openstack/quantum/commit/a9afa9dcdb85474b00f3715f75825d77f617011b
Submitter: Jenkins
Branch: master

commit a9afa9dcdb85474b00f3715f75825d77f617011b
Author: Mark McClain <email address hidden>
Date: Thu Jul 26 14:42:55 2012 -0400

    update DHCP agent to work with linuxbridge plug-in

    Fixes bug: 1027194

    Update the interface driver to use veths instead of tap devices. This
    change is compatible with the netns work.

    Change-Id: Ic236f5fdeb79eb36791434999df2b731856de092