[Openstack] DHCP and kernel > 3.2

Lorin Hochstein lorin at nimbisservices.com
Fri Aug 10 03:08:58 UTC 2012


On Aug 9, 2012, at 3:22 AM, Alessandro Tagliapietra <tagliapietra.alessandro at gmail.com> wrote:

> Hello guys,
> 
> i've just installed kernel 3.4 from Ubuntu kernel PPA archive and after this upgrade VM aren't able to get the DHCP address but with tcpdump i see the request and offer on the network.
> Someone else experienced this? I've tried also with 3.3, same story. Rolling back to 3.2 and everything works fine.
> 


When I had a similar problem the issue turned out to be that I needed to configure the NIC on the compute host to be in promiscuous mode, otherwise the DHCP response wouldn't make it to the VM. 

Lorin

Sent from my iPad




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