On Jul 20, 2012, at 9:57 PM, Narayan Desai wrote: > Just for the record, we found the issue. There was some filtering > being applied in the bridge code which randomly (?) dropped some DNS > requests. Setting: > net.bridge.bridge-nf-call-arptables = 0 > net.bridge.bridge-nf-call-iptables = 0 > net.bridge.bridge-nf-call-ip6tables = 0 > > completely resolved the problem. > > I've written up full details here: > http://buriedlede.blogspot.com/2012/07/debugging-networking-problems-with.html > -nld > Great writeup, I proposed a section to the docs for this: https://review.openstack.org/10106 Take care, Lorin -- Lorin Hochstein Lead Architect - Cloud Services Nimbis Services, Inc. www.nimbisservices.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20120722/e6cc2217/attachment.html>